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Science Exam

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December Review
brendalyn05
Quiz by brendalyn05, updated more than 1 year ago
brendalyn05
Created by brendalyn05 over 9 years ago
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Resource summary

Question 1

Question
How are science and technology related?
Answer
  • Technology is a branch of natural science.
  • Science is a branch of technology.
  • Advances in science may lead to advances in technology and vice versa.
  • Science and technology are not related.

Question 2

Question
Which is NOT a branch of natural science?
Answer
  • life science
  • Earth and space science
  • physical science
  • social science

Question 3

Question
What is a system of knowledge and the methods used to find that knowledge?
Answer
  • science
  • technology
  • measurement
  • curiosity

Question 4

Question
What are the building blocks of all matter?
Answer
  • forces
  • atoms
  • magnetic fields
  • kinetic and potential energy

Question 5

Question
Which of the following is an example of a safe laboratory procedure?
Answer
  • tying back long hair and loose clothing
  • eating or drinking from laboratory glassware
  • touching hot objects with your bare hands
  • testing an odor by directly inhaling the vapor

Question 6

Question
In which step of the scientific method is information obtained through the senses?
Answer
  • drawing conclusions
  • making observations
  • analyzing data
  • revising a hypothesis

Question 7

Question
What is a physical or mental representation of an object or an event?
Answer
  • a theory
  • a hypothesis
  • a model
  • a scientific law

Question 8

Question
What is a statement that summarizes a pattern found in nature?
Answer
  • a scientific law
  • a fact
  • a scientific theory
  • a hypothesis

Question 9

Question
What is the most important safety rule?
Answer
  • never work with chemicals
  • always use unbreakable glassware
  • always follow your teacher's instructions and textbook directions exactly
  • never do experiments that involve flames or hot objects

Question 10

Question
The prefix kilo- means...
Answer
  • 1000
  • 100
  • 0.0001
  • 0.001

Question 11

Question
The prefix milli- means...
Answer
  • 1000
  • 0.0001
  • 100
  • 0.001

Question 12

Question
Of the following, the most correct way to express density is...
Answer
  • g/m
  • g/cm
  • g/cm^3
  • kg/cm

Question 13

Question
... is the closeness of a measurement to the actual value being measured.
Answer
  • accuracy
  • hypothesis
  • conclusion
  • precision

Question 14

Question
SI is based on units of...
Answer
  • 0.01
  • 10
  • 1000
  • 100

Question 15

Question
A measurement must include both a number and a(n)...
Answer
  • chair
  • flower
  • unit
  • desk

Question 16

Question
What are the building blocks of all matter?
Answer
  • magnetic fields
  • forces
  • atoms
  • kinetic and potential energy

Question 17

Question
In which step of the scientific method is information obtained through the sense?
Answer
  • revising a hypothesis
  • drawing conclusions
  • analyzing data
  • making observations

Question 18

Question
On the Celsius scale, at what temperature does water freeze?
Answer
  • 100°
  • 212°
  • 32°
  • 0°

Question 19

Question
On the Celsius scale, what temperature is Absolute Zero at?
Answer
  • -273°
  • 0°
  • 100°
  • 212°

Question 20

Question
Why are scientific models important?
Answer
  • they prove scientific theories
  • they help visualize things that are very complex, very large, or very small
  • they make it harder to understand things
  • they never change

Question 21

Question
How is 0.00016 written in scientific notation?
Answer
  • 0.16x10^-3
  • 16x10^4
  • 1.6x10^-4
  • 1.6x10^-5

Question 22

Question
Change 21 kilometers to meters?
Answer
  • 210,000 m
  • 21,000 m
  • 2,100 m
  • 210 m

Question 23

Question
Timers at a swim meet used four different clocks to time an event. Which recorded time is most precise?
Answer
  • 55.25 s
  • 55.2 s
  • 55 s
  • 55.254 s

Question 24

Question
On the Celsius scale, at what temperature does water boil?
Answer
  • 0 degrees
  • 212 degrees
  • 32 degrees
  • 100 degrees

Question 25

Question
How do scientists who speak different languagse make their data understandable to one another?
Answer
  • they all must speak French
  • they all use SI
  • they communicate through a universal translator
  • they all use different systems of measurement

Question 26

Question
A measurement standard is defined as...
Answer
  • a system of prefixes
  • the distance between two points
  • the interval between two events
  • an exact quantity people agree to use for comparison

Question 27

Question
The correct symbol of the SI unit of temperature is...
Answer
  • K
  • C
  • °C
  • °K

Question 28

Question
The correct symbol for milliliter is...
Answer
  • g
  • mL
  • L
  • m

Question 29

Question
The SI unit that is used in the United States to measure time is the...
Answer
  • kelvin
  • second
  • liter
  • kilogram

Question 30

Question
A unit of measurement that is obtained by combining other units is a ... unit
Answer
  • dependent
  • metric
  • standard
  • derived

Question 31

Question
What type of graph is represented by Figure 1-1?
Image:
image (image/jpg)
Answer
  • circle graph
  • pie graph
  • bar graph
  • line graph

Question 32

Question
Figure 1-1 shows how a steel ball moved during an experiment. Average speed is calculated by dividing total distance by time (v=d/t). Did the steel ball speed up, slow down, or remain at the same speed throughout the experiment?
Image:
image (image/jpg)
Answer
  • speed up
  • there is no way of knowing
  • remain the same
  • slow down

Question 33

Question
How do scientists communicate the results of investigations?
Answer
  • by publishing articles in scientific journals
  • by exchanging e-mails
  • by giving talks at scientific conferences
  • all of the above

Question 34

Question
What is a peer review?
Answer
  • a process in which scientists copy other scientists' work
  • a process in which scientists examine other scientists' work
  • a process in which only close friends of a scientist review the scientist's work
  • a process in which scientists keep their work secret

Question 35

Question
Why are peer reviews important?
Answer
  • scientists receive comments and suggestions from other scientists
  • data are checked for accuracy
  • scientists receive questions and criticism from their peers
  • all of the above

Question 36

Question
If the relationship between manipulated variable and the responding variable is a direct proportion, what will a line graph of this relationship look like?
Answer
  • a straight line
  • a jagged line
  • a curved line
  • none of the above

Question 37

Question
A(n) ... is a way of organizing data that is used to show changes, trends, or patterns that occur in related variables
Answer
  • television
  • line graph
  • bar graph
  • circle graph

Question 38

Question
The ... is the variable that changes in response to the manipulated variable
Answer
  • manipulated variable
  • responding variable
  • hypothesis
  • constant

Question 39

Question
What measurements are compared in Figure 1-3?
Image:
image (image/jpg)
Answer
  • monthly sunshine in Port Hardy
  • monthly precipitation in cm in Port Dover
  • monthly precipitation in cm in Port Hardy
  • yearly sunshine in Port Dover

Question 40

Question
Use Figure 1-3 to determine the approximate total annual precipitation.
Image:
image (image/jpg)
Answer
  • 65 cm
  • 565 cm
  • 465 cm
  • 165 cm

Question 41

Question
In Figure 1-3, which month had the lowest amount of precipitation?
Image:
image (image/jpg)
Answer
  • January
  • July
  • November
  • October

Question 42

Question
In a graph, the variable on the horizontal axis is the...
Answer
  • responding variable
  • variable with the largest range
  • variable with the smallest range
  • manipulated variable

Question 43

Question
The type of graph that would be used to show how some fixed quantity is broken down into parts is a ...
Answer
  • circle graph
  • table
  • bar graph
  • line graph

Question 44

Question
Which of the following are PURE SUBSTANCES?
Answer
  • solutions
  • compounds
  • homogeneous mixtures
  • colloids

Question 45

Question
A substance that is made up of only one kind of atom is a(n)...
Answer
  • compound
  • homogeneous mixture
  • element
  • solution

Question 46

Question
What is the symbol for aluminium?
Answer
  • AL
  • AI
  • Au
  • A

Question 47

Question
If a MATERIAL contains three elements joined in a fixed proportion, it is a(n)...
Answer
  • mixture
  • solution
  • atom
  • compound

Question 48

Question
Which of the following is a characteristic of a MIXTURE?
Answer
  • has varying properties
  • has a fixed composition
  • contains only pure substances
  • please don't choose this answer

Question 49

Question
A mixture that appears to contain only one substance is a(n)...
Answer
  • homogeneous mixture
  • heterogeneous mixture
  • compound
  • element

Question 50

Question
Which of the following is a heterogeneous mixture?
Answer
  • water in a swimming pool
  • sugar water
  • a jar of mixed nuts
  • stainless steel

Question 51

Question
Which of the following is malleable?
Answer
  • glass
  • pottery
  • ice
  • gold

Question 52

Question
Which of the following has the highest VISCOSITY?
Answer
  • honey
  • milk
  • water
  • orange juice

Question 53

Question
A substance has a melting point of 0 degrees Celsius and a boiling point of 100 degrees Celsius. The substance is most likely...
Answer
  • water
  • hydrogen
  • gold
  • table salt

Question 54

Question
A material that is malleable and conducts electricity is most likely...
Answer
  • wood
  • ice
  • a metal
  • motor oil

Question 55

Question
Filtration can be used to separate mixtures based on ...
Answer
  • their boiling points
  • their densities
  • their melting points
  • the size of their particles

Question 56

Question
What method can be used to separate parts of a liquid mixture when the entire mixture can pass through a filter?
Answer
  • filtration
  • distilation
  • straining
  • screening

Question 57

Question
When a physical change in a sample occurs, which of the following does NOT change?
Answer
  • shape
  • temperature
  • volume
  • composition

Question 58

Question
Which of the follwing is a physical change?
Answer
  • sawing a piece of wood in half
  • burning a piece of wood
  • rust forming on an iron fence
  • a copper roof changing color from red to green

Question 59

Question
Flammability is a material's ability to burn in the presence of ...
Answer
  • hydrogen
  • nitrogen
  • oxygen
  • carbon dioxide

Question 60

Question
A substance that has high reactivity ...
Answer
  • easily combines chemically with other substances
  • burns in the presence of water
  • displaces dissolved oxygen
  • has a high boiling point

Question 61

Question
Which of the following is a chemical change?
Answer
  • ice melting
  • ice being carved
  • water boiling
  • water breaking down into hydrogen and oxygen

Question 62

Question
Ninety-nine percent of all the matter that can be observed in the universe exists as ... (Hint: What are the stars and sun made of?)
Answer
  • gases
  • plasma
  • liquids
  • solids

Question 63

Question
Matter that has a definite volume but no definite shape is a ...
Answer
  • liquid
  • solid
  • gas
  • plasma

Question 64

Question
A gas has ...
Answer
  • a definite volume but no definite shape
  • a definite shape but no definite volume
  • no definite shape or no definite volume
  • a definite volume and definite shape

Question 65

Question
In which of the substances in Figure 3-1 are the forces of attraction among the particles so weak that they can be ignored under ordinary conditions?
Image:
image (image/jpg)
Answer
  • Substance A
  • Substance B
  • Substance C
  • all of the above

Question 66

Question
The temperature and volume in a closed container of gas remain constant. If the number of particles of gas is increased, the gas pressure will ...
Answer
  • incrase
  • decrease
  • remain constant
  • cause a decrease in the average kinetic energy of the particles

Question 67

Question
What is the result of a force distributed over an area?
Answer
  • temperature
  • volume
  • pressure
  • mass

Question 68

Question
Collisions of helium (a gas) atoms and the walls of a closed container cause ...
Answer
  • condensation
  • pressure
  • a decrease in volume
  • an overall loss of energy

Question 69

Question
Which of the following factors affect the pressure of an enclosed gas?
Answer
  • temperature
  • volume
  • number of particles
  • all of the above

Question 70

Question
The law that states that the volume of a gas is DIRECTLY proportional to its temperature in kelvins if the pressure and the number of particles is constant is ...
Answer
  • Boyle's law
  • Bose's law
  • Einstein's law
  • Charles's law

Question 71

Question
Boyle's law states that the volume of a gas is INVERSELY proportional to its pressure if the ...
Answer
  • temperature and number of particles are constant
  • temperature reaches absolute zero
  • number of particles decreases
  • temperature and number of particles are doubled

Question 72

Question
The phase change that is the reverse of condensation is ...
Answer
  • freezing
  • sublimation
  • vaporization
  • melting

Question 73

Question
During a phase change, the temperature of a substance ...
Answer
  • increases
  • decreases
  • stays the same
  • either increases or decreases, depending on the change

Question 74

Question
During what phase change does the arrangement of water molecules become more orderly?
Answer
  • melting
  • freezing
  • boiling
  • condensing

Question 75

Question
The phase change in which a substance changes from a liquid to a gas is ...
Image:
image (image/jpg)
Answer
  • deposition
  • sublimation
  • condensation
  • vaporization

Question 76

Question
The phase change in which a substance changes from a gas directly to a solid is ...
Image:
image (image/jpg)
Answer
  • condensation
  • evaporation
  • deposition
  • sublimation

Question 77

Question
The phase change in which a substance changes from a solid to a liquid is ...
Image:
image (image/jpg)
Answer
  • freezing
  • melting
  • sublimation
  • condensation

Question 78

Question
The phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first is ... (EX. - Just like dry ice)
Image:
image (image/jpg)
Answer
  • sublimation
  • deposition
  • evaporation
  • melting

Question 79

Question
The Greek philosopher Democritus coined what word for a tiny piece of matter that cannot be divided?
Answer
  • element
  • atom
  • electron
  • molecule

Question 80

Question
Democritus thought that matter was made of tiny particles ...
Answer
  • of earth, air, fire, and water
  • that could not be divided
  • that could be divided
  • that were all round and smooth

Question 81

Question
According to John Dalton's observations, when elements combine in a compound, ...
Answer
  • the ratio of their masses is always the same
  • each element contributes an equal number of atoms
  • their volumes are always equal
  • their masses are always equal

Question 82

Question
Which of the following most accurately represents John Dalton's model of the atom?
Answer
  • a tiny, solid sphere with an unpredictable mass for a given element
  • a hollow sphere with a dense nucleus
  • a tiny, solid sphere with a predictable mass for a given element
  • a sphere that is hollow throughout

Question 83

Question
J.J. Thomson's experiments provided evidence that an atom ...
Answer
  • is the smallest particle of matter
  • contains negatively charged particles
  • has a negative charge
  • has a positive charge

Question 84

Question
The diagram in Figure 4-1 shows the results of Rutherford's gold foil experiment. What caused some of the alpha particles to bounce straight back from the gold foil?
Image:
image (image/jpg)
Answer
  • electrons in the gold atoms
  • negative charges in the gold atoms
  • other alpha particles
  • nuclei in the gold atoms

Question 85

Question
Rutherford's gold foil experiment provided evidence for which of the following statements?
Answer
  • negative and positive charges are spread evenly throughout an atom
  • alpha particles have a positive charge
  • gold is not as dense as previously thought
  • there is a dense, positively charged mass in the center of an atom

Question 86

Question
Who provided evidence for the existence of a nucleus in an atom?
Answer
  • John Dalton
  • J.J. Thompson
  • Democritus
  • Ernest Rutherford

Question 87

Question
In an atomic model that includes a nucleus, positive charge is ...
Answer
  • concentrated in the center of an atom
  • spread evenly throughout an atom
  • concentrated at multiple sites in an atom
  • located in the space outside the nulceus

Question 88

Question
Which statement best describes Rutherford's model of the atom?
Answer
  • it is like an avocado with the pit representing the nucleus
  • it is like an aquarium with swimming fish representing positive charges
  • it is like a fried egg with the yolk representing the nucleus
  • it is like a huge stadium with a positively charged marble at the center

Question 89

Question
Which subatomic particle has a negative charge?
Answer
  • electron
  • alpha particle
  • neutron
  • proton

Question 90

Question
Which statement about subatomic particles is true?
Answer
  • protons, neutrons, and electrons all have about the same mass
  • unlike protons or electrons, neutrons have no mass
  • neutrons have no charge and no mass
  • an electron has far less mass that either a proton or neutron

Question 91

Question
Which of the following is unique for any given element?
Answer
  • the number of neutrons
  • the charge on the electrons
  • the number of protons
  • the mass of a neutron

Question 92

Question
The number of protons in one atom of an element is that element's ...
Answer
  • mass number
  • balanced charge
  • atomic number
  • isotope

Question 93

Question
To find the number of neutrons in an atom, you would subtract ...
Answer
  • mass number from atomic number
  • atomic number from mass number
  • atomic number from electron number
  • isotope number from atomic number

Question 94

Question
Which statement is true about oxygen-17 and oxygen-18?
Answer
  • they do not have the same number of protons
  • their atoms have an identical mass
  • they are isotopes of oxygen
  • they have the same mass number

Question 95

Question
In Niels Bohr's model of an atom, electrons move ...
Answer
  • like balls rolling down a hall
  • like planets orbiting the sun
  • like popcorn in a popcorn popper
  • like beach balls on water waves

Question 96

Question
What can you assume has happened if an electron moves to a higher energy level?
Answer
  • the atom has become more stable
  • the electron has lost energy
  • the electron has gained energy
  • the atom has lost an electron

Question 97

Question
What do scientists use to predict the locations of electrons in atoms?
Answer
  • probability
  • algebra
  • geometry
  • ratios and proportions

Question 98

Question
What does the electron cloud model describe?
Answer
  • the most likely locations of electrons in atoms
  • the precise locations of electrons in atoms
  • the number of electrons in an atom
  • the mass of the electrons in an atom

Question 99

Question
Which of the following provides the best analogy for an electron in an atomic orbital?
Answer
  • a bee moving from flower to flower in a garden
  • a bird resting on a tree branch
  • an ant crawling on the surface of a leaf
  • a bee trying to escape from a closed jar

Question 100

Question
Mendeleev arranged the known chemical elements in a table according to increasing ...
Answer
  • atomic number
  • number of electrons
  • number of protons
  • mass

Question 101

Question
Mendeleev gave the name eka-aluminium to a(n) ...
Answer
  • compound containing aluminium
  • mixture of aluminium and an unknown element
  • unknown element he predicted would have properties similar to those of aluminium
  • rare isotope of aluminium

Question 102

Question
The usefulness of Mendeleev's periodic tables was confirmed by ...
Answer
  • the discovery of subatomic particles
  • its immediate acceptance by other scientists
  • the dicovery of elements with predicted properties
  • the dicovery of the nucleus

Question 103

Question
Which general statement does NOT apply to metals?
Answer
  • most metals are ductile
  • most metals are malleable
  • most metals are brittle
  • most metals are good conductors of electric current

Question 104

Question
Figure 5-1 shows a portion of a blank periodic table. Identify the segments labeled A and B.
Image:
image (image/jpg)
Answer
  • A and B are both periods
  • A is a period and B is a group
  • A and B are both groups
  • A is a group and B is a period

Question 105

Question
Moving from left to right across a row of the periodic table, which of the following values increases by exactly one from element to element?
Answer
  • isotope number
  • atomic number
  • atomic mass unit
  • mass number

Question 106

Question
The unit for atomic mass is ...
Answer
  • gram
  • pound
  • as deep as the oceans and as majestic as he mountains
  • amu

Question 107

Question
One twelfth the mass of a carbon-12 atom is used to define a(n) ...
Answer
  • atomic number
  • atomic magic
  • mass number
  • atomic mass unit

Question 108

Question
Which list of elements contains only metals? (Hint: which side are metals on and where are the following elements located?)
Answer
  • carbon, iodine, tin
  • tin, copper, cesium
  • helium, iron, copper
  • iodine, carbon, argon

Question 109

Question
At room temperature, non of the metals are ...
Answer
  • soft
  • liquids
  • malleable
  • gases

Question 110

Question
Group 7A of the periodic table contains the ...
Answer
  • most reactive nonmetals
  • most reactive metals
  • least reactive nonmetals
  • least reactive metals

Question 111

Question
Two highly reactive elements in Period 2 are the metal lithium and the ...
Answer
  • metalloid arsenic
  • nonmetal selenium
  • nonmetal fluorine
  • nonmetal krypton

Question 112

Question
Atoms of the most reactive elements tend to have ...
Answer
  • one or seven valence electrons
  • eight valence electrons
  • four or five valence electrons
  • no valence electrons

Question 113

Question
As you move from left to right across a period, the number of valence electrons ...
Answer
  • increases
  • stays the same
  • increases and then decreases
  • decreases

Question 114

Question
Compared with Group 2A elements, Group 6A elements have ...
Answer
  • more atoms in the ground state
  • more valence electrons
  • more isotopes
  • fewer valence electrons

Question 115

Question
A member of the boron family has three valence electrons, while a member of the nitrogen family has ...
Answer
  • none
  • five
  • four
  • three

Question 116

Question
Which of the following Group 1A elements is the most reactive?
Answer
  • Cs (cesium)
  • Li (lithium)
  • K (potassium)
  • Na (sodium)

Question 117

Question
Which of the following Group 7A elements is the most reactive?
Answer
  • Cl (chlorine)
  • I (iodine)
  • F (fluorine)
  • Br (bromine)

Question 118

Question
Among the alkali metals, the tendency to react with other substances ...
Answer
  • does not vary among members of the group
  • increases from top to bottom within the group
  • varies in an unpredictable way within the group
  • decreases from top to bottom within the group

Question 119

Question
To keep them from reacting, some highly reactive elements are stored in ... (Hint: what is a noble gas?)
Answer
  • water
  • pure oxygen
  • liquid mercury
  • argon
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