TEST REVIEW- Chemical Reactions

Two substances are combined. They form a precipitate. This is a...

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Dry ice can quickly turn from solid to gas as it warms up. This is a...

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-4

I made a cake! A chemical reaction occurred. Which of the following is evidence of the chemical reaction?

• The odor changed

• The cake became less dense

• The cake changed color

• The cake bubbled in the oven, producing a gas

• ALL of the above!

Tags

NGSS.MS-PS1-2

Does this show the law of conservation of mass?

• Yes

• No

Tags

NGSS.MS-PS1-5

Does this show the law of conservation of mass?

• Yes

• No

Tags

NGSS.MS-PS1-5

Does this show the law of conservation of mass?

• Yes

• No

Tags

NGSS.MS-PS1-5

What does the law of conservation of mass tell us?

• The mass of reactants is always more than the mass of the products

• The mass of reactants is always less than the mass of the products

• The mass of the reactants is always equal to the mass of the products

• None of the above

Tags

NGSS.MS-PS1-5

I need to keep something warm! I should put it near an _______ reaction.

• Endothermic

• Exothermic

Tags

NGSS.MS-PS1-6

I need to keep something cold! I should put it near an _______ reaction.

• Endothermic

• Exothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-6

Which animal had the lowest population in 2020? (Practice reading a graph!)

• Bears

• Dolphins

• Whales

Tags

NGSS.MS-LS2-1