Matter 2 Question Preview (ID: 7958)


Physical And Chemical Changes. TEACHERS: click here for quick copy question ID numbers.

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 kinds of matter are different.
c) The amount of matter is the same.
d) The amount of matter is different.

What is true about the types of matter present before and after the matter undergoes a chemical change?
a) The kinds of matter are the same.
b) The kinds of matter are different.
c) The amount of matter decreases.
d) The amount of matter increases.

Which types of changes follow the law of conservation of mass?
a) Only changes of state
b) Only physical changes
c) Only chemical changes
d) Both physical and chemical changes

How does heating an object cause a chemical change?
a) It changes the state of the matter.
b) It causes new bonds to form between molecules.
c) It increases the kinetic energy of the particles.
d) It rearranges the formation of the particles.

How do you know when a chemical change has occured?
a) Bubbles are formed.
b) The color changes.
c) A precipitate forms.
d) None of the above

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) The ash has less volume than the paper.
b) Some of the matter is destroyed during the reaction.
c) The mass of the ash cannot be accurately measured.
d) Some of the products of the reaction were given off as a gas.

Which of the following is NOT an example of a physical change?
a) Stretching a rubber band
b) Melting butter
c) Milk souring
d) Dissolving sugar in water

Which of the following scientists made the biggest contributions to the law of conservation of mass?
a) Louis Pasteur
b) Antoine Lavoisier
c) Anton Van Leeuwenhoek
d) Daniel Bernoulli

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 rise.
b) The water level will fall.
c) The water level will stay the same.
d) Not enough information

Which of the following is an example of a physical change?
a) Burning a piece of paper
b) Dying yarn
c) Mixing alkaseltzer and water
d) Lighting a match

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