4234408
Description
Quiz by jujubeeamorde, updated more than 1 year ago
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Created by jujubeeamorde
almost 9 years ago
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Question 1
Question
What devices are used to measure mass, volume, density, and weight?
Answer
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Triple-Beam balance & scale
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mass divided by weight
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graduated cylinder
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beaker
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volume over mass
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mass over volume
Question 2
Question
For the pendulum experiment what were the Independent and dependent variables?
Answer
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Mass, period
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Weight, size
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Time, force
Question 3
Question
Scientific theory is what scientists predict to happen in the future.
Answer
- True
- False
Question 4
Question
How many significant figures are in 0.57?
Answer
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2
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3
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4
-
1
Question 5
Question
Using sig figs, how would you solve 26.9 divided by 3?
Answer
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.9
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9
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900
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.009
Question 6
Question
Percent error is: predicted-true value
------------------------------
true value
Answer
- True
- False
Question 7
Question
Protons add [blank_start]one[blank_end] amu to the atom. Neutrons add [blank_start]one[blank_end] amu to the atom. Electrons add [blank_start]no[blank_end] mass to the overall atom.
Answer
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one
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one
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no
Question 8
Question
Properties of metalloids include-
Answer
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brittle
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somewhat reactive
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hard
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soft
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unbreakable
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luster
Question 9
Question
What is the last part of the brain to develop?
Answer
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frontal cortex
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pre-frontel cortex
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dark matter
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white matter
Question 10
Question
Three methods used to avoid animal-testing?
Answer
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in vitro testing
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computer modeling
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volunteer
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insect testing
Question 11
Question
solutions contain a solvent dissolved in a solute
Answer
- True
- False
Question 12
Question
molecular compounds in water conduct electric current
Answer
- True
- False
Question 13
Question
a characteristic property of a solution is that it can scatter light
Answer
- True
- False
Question 14
Question
brass is a solid dissolved in a solid
Answer
- True
- False
Question 15
Question
shows the ratio of atoms in a compound
Answer
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chemical formula
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element
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mixture
Question 16
Question
Dalton thought the atom was a condense sphere
Answer
- True
- False
Question 17
Question
...thought the atom was like a watermelon (scattered electrons)
Answer
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thomson
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bohr
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rutherford
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dalton
Question 18
Question
Rutherford said the atom was like....
Answer
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empty space with a positive core
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a cloud of electrons
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electrons surrounding a nucleus of protons and neutrons
Question 19
Question
Bohr said the atom had a nucleus filled with protons and neutrons with electrons orbiting around the entire nucleus
Answer
- True
- False
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