Physical and Chemical Changes

A ___________ change is when one or more substances are changed into a new substance with different properties.

• Physical
• Chemical

A ______________ change is a change in one or more physical properties of a substance.

• chemical
• physical

Freezing water into ice cubes is an example of a _____________ change

• chemical
• physical

baking a cake is an example of a _______________ change.

• chemical
• physical

bending a paper clip is an example of a __________ change.

• chemical
• physical

A chemical change

• can sometimes be undone
• can never be undone
• can always be undone
• cannot be done

Chemical changes often

• cause color changes
• produce heat
• produce sound
• all of the above

_____________ is made up of two hydrogen atoms and one oxygen atom

• ice
• a cookie
• a broken plate
• all of the above

After a physical change, a substance may look different but

• the atoms and molecules that make up the substance stay the same
• an odor is produced
• the plate will be broken
• the atoms and molecules change their properties

The ________________ of baked cookies tells you that a chemical change has happened

• scent
• color
• taste
• all of the above