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Ch 15 Quiz Review

Authored by Matt Edgmon

Science

7th - 8th Grade

NGSS covered

Used 52+ times

Ch 15 Quiz Review
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30 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Chemistry is

a characteristic of a substance that can be observed without changing the substance into another substance.

the study of matter and how matter changes

anything that has mass and takes up space.

a rapid reaction between oxygen and a substance called a fuel.

Alchemy

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The only sure evidence for a chemical reaction is

the formation of a gas.

a color change.

the production of one or more new substances

changes in properties.

formation of flobberworms

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A material used to decrease the rate of a chemical reaction is a(n)

inhibitor.

catalyst.

enzyme.

fuel.

Aparecium

Tags

NGSS.MS-PS1-2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

CaCO3 represents a chemical

symbol

formula.

subscript.

reaction.

Muggles

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which is the correct chemical equation for the following statement?

Sodium reacts with oxygen in a 2 to 1 ratio to produce sodium oxide

4 Na + O2 2 Na2O

2 Na + O2 2 NaO

Na2O + O2 2 NaO

Na2 + O2 Na2O2

CoFe2CoFe + CuP

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The principle of conservation of mass is true

only for reactions that take place in open systems.

only for reactions that take place in closed systems.

for reactions in both open and closed systems.

for no reactions at all.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

In chemical reactions, what does the principle of conservation of mass mean?

Matter is not created or destroyed.

The total mass of the reactants is greater than the total mass of the products.

The total mass of the reactants is less than the total mass of the products.

Matter is not changed.

Tags

NGSS.MS-PS1-5

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