When calcium reacts with water, the temperature changes from 18°C to 39°C. Which statement is correct?

The solution at the end is acidic

Which statement is true regarding endothermic reactions?

c) Temperature change is negative and enthalpy change is positive

a) Temperature change is positive and enthalpy change is positive

b) Temperature change is positive and enthalpy change is negative

d) Temperature change is negative and enthalpy change is negative

Which of the following process is exothermic?

Dry ice (solid carbon dioxide) subliming to form gaseous carbon dioxide

exothermic and endothermic

Quiz

•

Chemistry

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-PS1-4, HS-PS3-4, MS-PS1-4

+9

Standards-aligned

supper teacher

Used 15+ times

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36 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an endothermic reaction, energy is _________.

absorbed

released

Tags

NGSS.HS-PS1-4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

_____ reactions usually feel hot!

endothermic

exothermic

Tags

NGSS.HS-PS1-4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

____ reactions usually feel cold.

endothermic

exothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Solid --> liquid --> gas is what type of reaction?

endothermic

exothermic

catalytic

inhibited

Tags

NGSS.HS-PS1-4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

gas --> liquid --> solid is what type of reaction?

endothermic

exothermic

catalytic

inhibited

Tags

NGSS.HS-PS1-4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Endo means in or _______.

absorbed

released

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Exo means out or ________.

absorbed

released

Tags

NGSS.HS-PS1-4

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gas --> liquid --> solid is what type of reaction?

Endo means in or _______.

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