Matter & Chemical Reactions Review

__________ are the building blocks of life.

• solids
• gases
• atoms
• nutrients

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

I am the smallest whole particle of matter. 

• atom
• compound
• molecule
• mixture

Tags

NGSS.MS-PS1-1

A pure substance that cannot be broken down into any other substance by chemical or physical means. There are about 100 of us shown in the Periodic Table. (A specific type of atom.)

• compound
• mixture
• molecule
• element

A chemical reaction that releases energy is called....

• exothermic

• endothermic

Tags

NGSS.MS-PS1-4

Matter is anything that...

• Has mass and volume

• Takes up space and has volume

• Has mass and takes up space

• Has energy and mass

Tags

NGSS.MS-PS1-5

________ result(s) in no new substances.

• A physical change

• A chemical change

• Physical and chemical changes

• None of the above

Which is an example of a physical change?

• Burning wood
• Freezing water
• Rust on a car
• Cooking food

Tags

NGSS.MS-PS1-4

If you start a chemical reaction with 5 atoms of helium, how many atoms will you have after?

• 4 atoms
• 10 atoms
• 1 atom
• 5 atoms

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is TNT exploding a physical or chemical change?

• Physical
• Chemical
• Both physical and chemical
• Neither physical nor chemical

Tags

NGSS.MS-PS1-2

Which of these is NOT a sign that a chemical change has occurred? 

• Change in shape.
• An unexpected color change
• A temperature change
• The formation of a precipitate

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4