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Matter 2
Test Description: Physical and Chemical Changes
Instructions: Answer all questions to get your test result.
1) What is true about the kinds of matter present before and after that matter undergoes a physical change?
A
The kinds of matter are the same.
B
The amount of matter is different.
C
The amount of matter is the same.
D
The kinds of matter are different.
2) What is true about the types of matter present before and after the matter undergoes a chemical change?
A
The amount of matter increases.
B
The amount of matter decreases.
C
The kinds of matter are the same.
D
The kinds of matter are different.
3) Which types of changes follow the law of conservation of mass?
A
Only physical changes
B
Only chemical changes
C
Only changes of state
D
Both physical and chemical changes
4) How does heating an object cause a chemical change?
A
It rearranges the formation of the particles.
B
It increases the kinetic energy of the particles.
C
It causes new bonds to form between molecules.
D
It changes the state of the matter.
5) How do you know when a chemical change has occured?
A
A precipitate forms.
B
The color changes.
C
Bubbles are formed.
D
None of the above
6) When paper is burned, the mass of the remaining ash is less than the mass of the original paper. Which statement best explains this result?
A
Some of the products of the reaction were given off as a gas.
B
The mass of the ash cannot be accurately measured.
C
The ash has less volume than the paper.
D
Some of the matter is destroyed during the reaction.
7) Which of the following is NOT an example of a physical change?
A
Stretching a rubber band
B
Melting butter
C
Dissolving sugar in water
D
Milk souring
8) Which of the following scientists made the biggest contributions to the law of conservation of mass?
A
Daniel Bernoulli
B
Anton Van Leeuwenhoek
C
Louis Pasteur
D
Antoine Lavoisier
9) If I put a bunch of ice cubes into a glass of water and mark the level of the water, what observation would be made as we watch the ice melt?
A
The water level will fall.
B
The water level will rise.
C
The water level will stay the same.
D
Not enough information
10) Which of the following is an example of a physical change?
A
Dying yarn
B
Burning a piece of paper
C
Mixing alkaseltzer and water
D
Lighting a match
*select an answer for all questions
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