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1-3 Part 2
Test Description: Investigate and measure the effects of energy in a physical and chemical change
Instructions: Answer all questions to get your test result.
1) What often happens when a chemical or physicak change occurs?
A
Change in size
B
Change in energy
C
Change in color
D
Change in mass
2) Which of the following statements best explains why a substance changes from a liquid to a gas when heated?
A
A liquid turns into a gas when heated because it expands and the container can no longer hold it. The molecules spill out th
B
The heat energy causes molecules to move faster and they move farther apart. Some have enough energy to escape from a liquid
C
Things get bigger when they are heated because the heat causes more motion in the substance. The substance expands into a ga
D
The molecules of water change to hydrogen and oxygen. They are gases and escape from the water.
3) What kinds of energy are produced by bright fireworks?
A
Motion, gravity
B
Light, heat
C
Electricity, steam
D
Sound, magnetism
4) A student is making vegetable soup on the stove. He learned in science class that liquids boil at the same temp until they change to a gas. How will what he learned help him cook the soup and save energy?
A
He will turn the heat up a little under where it needs to be for boiling
B
He will turn the heat up much hotter than needed for boiling
C
He will add water to the same soup until it boils
D
He will turn the heat up so that it just barely boils
5) Students were asked to design an experiment that added or removed energy to a chemical reaction. Which of the following hypothesis would be found in an experiment that tested this?
A
If we heat water and add salt, then the salt will dissolve faster
B
If we heat vinegar and add baking soda, then it will react faster
C
If we heat an ice cube, then it will melt faster
D
If we heat water and change it to a gas, then it can be collected into a liquid
6) A bag containing several chemicals is used for sports injuries. When the chemicals are combined, the bag becomes cold. What is this evidence of?
A
Nuclear change
B
Chemical change
C
Physical change
D
Atomic change
7) Electromagnetic energy can be found in
A
Heat
B
Wind
C
Electricity
D
X-rays
8) The amount of stuff in an object is known as
A
Matter
B
None of the above
C
Weight
D
Mass
9) ______________________ is the amount of space that matter occupies.
A
Volume
B
Matter
C
Energy
D
Mass
10) A characteristic of matter that can be observed without changing the substance into something else is known as what?
A
Chemical property
B
Chemical change
C
Physical property
D
Physical change
*select an answer for all questions
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