Chemical Reactions
Authored by Jennifer Brundage
Science, Chemistry
7th Grade
NGSS covered
Used 172+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following is NOT a description of an Endothermic reaction
The temperature decreases
Energy is absorbed
Energy is released
Takes more energy to break the bonds than is released
Tags
NGSS.MS-PS1-4
NGSS.MS-PS3-4
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the options below is NOT a chemical change
Cooking
Digestion
Phase Change
Rusting
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-4
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A chemical change occurs because
The atoms are changing
A chemical reaction has occurred
Nothing new is made
A change in state of matter occurred
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which option below is an example of an Exothermic reaction
Fireworks
Photosynthesis
Cold pack
Potassium chloride in water
Tags
NGSS.MS-PS1-2
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which factor does NOT increase the rate (speed) of a chemical reaction
Increasing concentration
Increasing temperature
Increasing surface area
Increasing inhibitor
Tags
NGSS.HS-PS1-5
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
In order to get the rate (speed) of a chemical reaction to increase you must
Get more product particles together more often
Get more reactant particles together more often
Get the frequency of reactant molecules to come in contact less often
Get the frequency of the product molecules to come in contract more often
Tags
NGSS.HS-PS1-5
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What does the Law of Conservation of Mass state
The mass of the reactants must be close to the mass of the products
The atoms in the reactants will be different than the atoms in the products
Matter is neither created or destroyed, therefore the number of atoms in reactants will be identical to the number of atoms in the products
Atoms of the reactants are not rearranged, therefore the number of atoms will be different.
Tags
NGSS.MS-PS1-5
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