Chemical Reactions and Conservation of Mass

Chemical Reactions and Conservation of Mass

8th Grade

22 Qs

quiz-placeholder

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Chemical Reactions and Conservation of Mass

Chemical Reactions and Conservation of Mass

Assessment

Quiz

Science

8th Grade

Medium

NGSS
MS-PS1-1, MS-PS1-2, MS-PS1-5

+4

Standards-aligned

Created by

Barbara Wagy

Used 202+ times

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22 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is true of the law of conservation of mass?
The same number and type of each atom will always be present before and after a chemical reaction takes place.
Some of the atoms present before the reaction will always be lost during a chemical reaction.
Some of the atoms will always be changed into a different type of atom by a chemical reaction.
During a chemical reaction, atoms will always be combined into much larger molecules.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is the best description of the results of a chemical reaction?
The substance seems to disappear after dissolving in water.
The substance changes from liquid to solid at a low temperature.
The reaction can be reversed to get back the original substance.
A new substance with different properties is formed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Endothermic reactions...
release energy
explode
take in energy
have higher energy in their reactants than the products

Tags

NGSS.MS-PS1-4

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Exothermic reactions
have higher energy in their products than their reactants
release energy
get cold
are synthesis reactions

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is not evidence of a chemical reaction?
gas produced
precipitate formation
color change
mass change

Tags

NGSS.MS-PS1-2

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The substances listed to the left of the arrow in a chemical reaction are called the _______________.
products
reactants
substances
materials

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many Al atoms are in this compound?         4Al2O3
2
8
6
4

Tags

NGSS.MS-PS1-1

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