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A quiz based on Dr. David's class 18 lecture

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angela le
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A&P - Class 18 The Chemical Level Quiz

Question 1 of 29

1

What is matter?

Select one of the following:

  • Anything that occupies space and has mass

  • The amount of electrons in a atom

  • The amount of matter in an object

Explanation

Question 2 of 29

1

What is mass?

Select one of the following:

  • The space that an object occupies

  • The amount of matter in any object

  • The central act of divine worship in the Catholic Church

Explanation

Question 3 of 29

1

Of the ((92)) naturally occurring elements, how many are in the human body?

Select one of the following:

  • 50

  • 26

  • 100

  • 25

Explanation

Question 4 of 29

1

Of the ((26)) elements in the human body, which are the ones that make up 96% of the body's mass?

Select one of the following:

  • Carbon, Hydrogen, Onion, Nitrogen

  • Calcium, Helium, Oxygen, Nipple

  • Carbon, Hydrogen, Oxygen, Nitrogen

  • Carbon, Hydrogen, Oxycontin, Nitrous

Explanation

Question 5 of 29

1

3.6% of the body's mass contain 8 elements, and the remainder 0.4% are trace elements.

Select one of the following:

  • True
  • False

Explanation

Question 6 of 29

1

What is a true statement?

Select one of the following:

  • Radioactive isotopes are stable and bond to become more complex structures

  • The chemical properties of an atom are a function of it's electrons.

  • Electrons have a positive charge

  • Queen Elizabeth VII of France was a weeaboo

Explanation

Question 7 of 29

1

How can an element have the same atomic number but a different mass number?

Select one of the following:

  • Because they have a different number of electrons.

  • Because they have a different number of protons

  • Because they have a different number of neutrons.

  • Because they are radioactive.

Explanation

Question 8 of 29

1

Isotopes are...

Select one of the following:

  • Atoms of the same elements with different mass number

  • Atoms of the same element with a negative or positive charge

  • Are a positively or negatively charged compound

  • Unstable and destructive

Explanation

Question 9 of 29

1

What are radioactive isotopes?

Select one of the following:

  • Are unstable and decay into a simpler, more stable configuration. In the process, they can decay into a more simple element

  • An electrically charged atom or group of atoms with an unpaired electron in its outermost shell.

  • A substance made of two or more atoms that can be broken down into the two or more different elements

  • derp

Explanation

Question 10 of 29

1

What is the difference between MASS NUMBER and ATOMIC MASS? (tricky one)

Select one of the following:

  • The MASS NUMBER is the sum of the protons and neutrons of the atom. The ATOMIC MASS of an element is the average weight of all its naturally occurring isotopes.

  • The MASS NUMBER is the average weight of all its naturally occurring isotopes. The ATOMIC MASS is the sum of the protons and neutrons of the atom.

  • The ATOMIC MASS is the number of protons in an atom. The MASS NUMBER is the sum of the protons and neutrons of the atom

Explanation

Question 11 of 29

1

Select all that is true

Select one or more of the following:

  • The massage table desks are very comfortable to put our feet through

  • Class 18D is the best

  • I can learn everything when I put my mind to it

  • The evolutionary history of cetaceans is thought to have occurred in the Indian subcontinent from even-toed ungulates 50 million years ago, over a period of at least 15 million years. Cetaceans are fully aquatic marine mammals belonging to the order Artiodactyla, and branched off from other artiodactyls around 50 mya (million years ago). Cetaceans are thought to have evolved during the Eocene or earlier, sharing a closest common ancestor with hippopotamuses.

Explanation

Question 12 of 29

1

The process of giving up or gaining an electron, resulting in an atom of positive or negative charge is called...

Select one of the following:

  • Onionization

  • Anionization

  • Ionization

  • Bunionization

Explanation

Question 13 of 29

1

Molecules and compounds are both groups of 2 or more atoms. What is the difference between them?

Select one of the following:

  • Molecules can consist of atoms of the same or different element. Compounds can only consist of atoms of different element.

  • Molecules can only consist of atoms of different element. Compounds can consist of atoms of the same or different element

Explanation

Question 14 of 29

1

The mass of an atom is measured by a standard unit called a dalton. A dalton is the equivalent of what?

Select one of the following:

  • is equivalent to one sixteenth of the weight of one atom of oxygen.

  • is equivalent to one sixteenth of the weight of one atom of carbon.

  • is equivalent to one sixteenth of the weight of one atom of nitrogen.

  • is equivalent to one sixteenth of the weight of one atom of hydrogen.

Explanation

Question 15 of 29

1

Two or more atoms interacting to produce a chemically stable arrangement of eight valence electrons for each atom is called:

Select one of the following:

  • Cation

  • The octet rule

  • The quartet rule

Explanation

Question 16 of 29

1

Select the types of chemical bonds

Select one or more of the following:

  • Ionic bond

  • Covalent bond

  • Hydrogen bond

  • James bond

Explanation

Question 17 of 29

1

A anion is a POSITIVELY charged ion.

Select one of the following:

  • True
  • False

Explanation

Question 18 of 29

1

What is an ionic bond?

Select one of the following:

  • When 2 atoms joining together share electrons

  • Positively and negatively charged ions attracted to one another forming a bond

  • The bond between Stephen and Kevin

Explanation

Question 19 of 29

1

Covalent bonds can form between atoms of the same AND different elements and are the most frequent chemical bonds in the body.

Select one of the following:

  • True
  • False

Explanation

Question 20 of 29

1

Select all that is true for polar covalent bonds

Select one or more of the following:

  • Electrons are not equally shared

  • Are hydrophobic

  • one part of the molecule is more negative than the other side of the molecule

Explanation

Question 21 of 29

1

Select all that is true for non polar covalent bonds

Select one or more of the following:

  • Are hydrophilic

  • Electrons are equally shared

  • No one part is distinctly positive or negative

Explanation

Question 22 of 29

1

Select all that is true about hydrogen bonds

Select one or more of the following:

  • The polar covalent bond between hydrogen and other atoms produces hydrogen bonds.

  • They are only about 5% as strong as covalent bonds.

  • Positive and negative charged ions are attracted to one another.

  • The hydrogen bond cannot bind atoms into molecules, but they can establish links between the molecules.

Explanation

Question 23 of 29

1

What kind of energy is STORED BY MATTER?

Select one of the following:

  • Potential energy

  • Kinetic energy

  • Chemical energy

Explanation

Question 24 of 29

1

Exergonic reactions release LESS energy than they absorb.

Select one of the following:

  • True
  • False

Explanation

Question 25 of 29

1

Anabolism is a synthesis reaction.

Select one of the following:

  • True
  • False

Explanation

Question 26 of 29

1

Redox reactions are coupled reactions of oxidation and reduction. What is a) oxidation and b) reduction?

Select one or more of the following:

  • Oxidation is the gain of an electron. Reduction is the loss of an electron.

  • Oxidation is the loss of an electron. Reduction is the gain of an electron

Explanation

Question 27 of 29

1

What 2 factors influence the speed of chemical reactions?

Select one or more of the following:

  • temperature of environment

  • amount of molecules

  • concentration

Explanation

Question 28 of 29

1

An exchange reaction consists of synthesis and decomposition reactions.

Select one of the following:

  • True
  • False

Explanation

Question 29 of 29

1

ATP is a molecule that stores energy from the exergonic breakdown of glucose.

Select one of the following:

  • True
  • False

Explanation

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