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Chapter 2 Test:Chemical Reactions and Equations

Authored by Brittney Allen

Science

8th Grade

NGSS covered

Used 6+ times

Chapter 2 Test:Chemical Reactions and Equations
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50 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which situation involves a chemical change?

food rotting

paper ripping

water freezing

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which statement proves that a chemical reaction has occurred?

Bubbles form in a liquid

At least one substance changes color

Substances with new chemical properties are formed.

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which equation is balanced?

H2 +O2--->H2O

2Na + Cl2 ---> 2NaCl

CH4 + 2O2 ---> CO2 + H2O

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which situation does NOT occur during chemical reactions?

Bonds are broken.

Atoms are created.

Compounds are formed.

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

In a chemical equation, is it true that -

the reactant side and product side can have different numbers of atoms for each element
there can be different elements on the reactant side and the product side
an element or compound must be accompanied by a phase change
the coefficients indicate the number of molecules of each reactant used and the number of molecules of each product made

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The reactants are on the left side of the chemical equation.

True
False

Tags

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

In a ___________change, a substance changes into a different substance.

Physical

Chemical

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

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