STAAR Review 8.5E

Front

A change in which NEW substances are formed.

Back

Chemical change

Front

Exothermic reactions...

Back

Release energy

Front

Which of the following could indicate a chemical change? Options: All of the answers could indicate Chemical Change, a color change has occurred, bubbles appear, identifying one or more new chemical products

Back

All of the answers could indicate Chemical Change

Front

Which is NOT an example of chemical change? Options: production of gas, change in color, change in size, transfer of energy.

Back

change in size

Front

Chemical reactions that absorb energy are known as ________________________.

Back

Endothermic

Front

A copper penny turning greenish after a few years is an example of...

Back

Chemical Change

Front

Which of the following is a PHYSICAL change? Options: Getting a haircut, Rusty metal, sour milk, A compound

Back

Getting a haircut

Front

Which of the following IS a chemical change: using chalk, water freezing, slicing cheese, digestion?

Back

digestion

Front

Law of Conservation of Mass

Back

Within a closed system, mass does not change

Front

Can matter be created or destroyed?

Back

No, matter is always conserved