Physical and Chemical Changes in Matter

Matter is

• a process that changes substances into new substances

• anything that has mass and takes up space.

• A change in one or more of matter’s physical properties

Physical properties of matter include

• texture
• color
• conductivity
• all of the above

What do we call the study of matter and how it changes?

• Physics
• Biology
• Chemistry
• Psychology

What do we call the substances used to bring about chemical reactions?

• inhibitors
• accelerators
• reactants
• solutions

What do we call the atoms and molecules that are formed as a result of chemical reactions

• products
• outcomes
• artifacts
• none of the above

What has to happen to the bonds between atoms and reactants in order for chemical reactions to take place?

• They have to be broken.
• They have to join together.
• They have to multiply.
• They have to create energy.

Which of the following is a sign that a chemical reaction has occurred?

• change in color
• an odor is produced
• a gas is produced
• all of the above

Which of the following is a sign that a gas has been produced?

• bubbles
• rocks
• light
• none of the above

A change in physical properties that does not produce a new substance

• is a physical change
• is a chemical change
• is not a change

A change that produces a new substance,

• is a physical change
• is a chemical change
• is a change in state