Compounds and Chemical Reactions
Authored by Charles Martinez
Chemistry
10th - 12th Grade
NGSS covered
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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true for all chemical reactions?
The total mass of the reactants equals the total mass of the products.
The total mass of the products is greater than the total mass of the reactants.
The total mass of the reactants increases.
The total mass of the products is less than the total mass of the reactants.
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place?
a physical change
a chemical change
neither a physical change nor a chemical change
both a physical change and a chemical change
Tags
NGSS.MS-PS1-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What must occur for a change to be a chemical reaction?
There must be a change in chemical properties.
The change must involve a change in mass.
The change must involve a change in volume.
There must be a change in physical properties.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
All of the following changes to a metal are physical changes EXCEPT ____.
rusting
polishing
melting
bending
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following represents a compound?
H
H2O
O-16
H-3
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which action changes the identity of the substance referenced?
running an electric current through copper
melting gold
breaking an ice cube
corroding iron
Tags
NGSS.MS-PS1-2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is one difference between a mixture and a compound?
A mixture must be uniform in composition.
A compound consists of more than one phase.
A compound can only be separated into its components by chemical means.
A mixture can only be separated into its components by chemical means.
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