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8.MS-PS1-2
Test Description: 8.MS-PS1-2
Instructions: Answer all questions to get your test result.
1) What is different between bubbles due to boiling and bubbles due to a chemical change?
A
The bubbles during boiling represent a chemical change
B
The bubbles during boiling are not a new substance
C
The bubbles during boiling are a new substance
D
The bubbles during boiling are the result of an exothermic reaction
2) Freezing liquid water into ice is a _____ change
A
catalyst
B
characteristic
C
chemical
D
physical
3) Dissolving salt in water is a ____ change
A
characteristic
B
chemical
C
catalyst
D
physical
4) Which of the following is NOT a characteristic property?
A
malleability
B
mass
C
density
D
melting point
5) Which of the following is an example of a physical change?
A
Sugar is combined with water and it dissolves in the water
B
A powder is combined with water and it begins to fizz
C
A red liquid is combined with a yellow mixture and turns purple
D
Two liquids are combined and begin to give off heat
6) What is in the bubbles created during a chemical reaction?
A
a new gas
B
one of the reactants, just in a different state of matter
C
the surrounding air
D
heat
7) The density a gold bar is calculated to be 19.32 g/cm3. If the bar is cut in half, what will be the density of each half?
A
9.66 g/cm3
B
38.64 g/cm3
C
Cannot be answered with the information provided
D
19.32 g/cm2
8) How does the boiling point of a substance change as you increase the volume??
A
it doesn't change
B
it depends on the substance
C
it decreases
D
it increases
9) Which of the following is NOT a physical property?
A
mass
B
density
C
flammability
D
freezing point
10) When saliva starts breaking down food particles, that is a chemical change. Which is the best explanation for why?
A
the macromolecules remain intact
B
the food looks different afterwards
C
the enzyme in saliva breaks bonds within the macromolecules
D
the food gets mashed down into small pieces
*select an answer for all questions
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