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8th final exam

Authored by Casey Dellosso

Science

8th Grade

NGSS covered

Used 4+ times

8th final exam
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55 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The substances that are formed by a chemical reaction are called the

products

reactants

chemicals

precipitates

Tags

NGSS.MS-PS1-2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When the equation Mg + HCl → MgCl2 + H2 is balanced, the coefficient of MgCl2 is

3

4

2

1

Tags

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When there is absorption of energy in a chemical reaction, it is called a(n) ______________ reaction.

exothermic

activation

endothermic

combustion

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When there is release of energy in a chemical reaction, it is called a(n) ______________ reaction.

exothermic

activation

endothermic

combustion

Tags

NGSS.MS-PS1-4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A substance that speeds up the rate of a chemical reaction by lowering the activation energy

oxidation

a catalyst

reduction

activation

Tags

NGSS.HS-PS1-4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A solution with a pH of 1 is

a strong acid

a strong base

a weak acid

a weak base

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

By definition, the addition of oxygen to a substance is called

neutralization

reduction

oxidation

displacement

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