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7th Grade Unit 2 Review 2016 Reilly
Test Description: 7th grade unit 2 review 2016
Instructions: Answer all questions to get your test result.
1) Matter cannot be created or destroyed is which law?
A
conservation of light
B
conservation of volume
C
conservation of energy
D
conservation of mass
2) all matter is made of
A
gas
B
life
C
energy
D
atoms
3) if something has a lot of mass
A
It has a high density
B
It has a low frequency
C
It has a large volume
D
It contains a lot of matter
4) How is weight different than mass?
A
Weight can be converted to energy; mass cannot
B
Weight is measured in grams; mass is measured in newtons
C
Weight is measured with a scale; mass is measured with a triple beam balance
D
Weight changes depending on gravity; mass stays the constant throughout the universe
5) the two or more substances that used in a chemical reaction before the reaction happens are called
A
reactants
B
producers
C
pollutants
D
product
6) in a chemical reaction the end result is called
A
product
B
reactants
C
pollutants
D
producers
7) which of the following proves that a chemical reaction has taken place
A
weathering
B
change in size
C
gas formation
8) which of the following proves that a chemical reaction has taken place
A
size change
B
temperature change
C
change in state
9) In a chemical reaction, the atoms that make up the original substances are regrouped into different _________
A
Elements
B
Atoms
C
Molecules
D
Compounds
10) heat energy is also considered
A
Electric energy
B
Potential energy
C
Thermal energy
D
Light
11) potential energy is
A
energy of movement
B
stored energy
C
stored calories
D
energy of light
12) kinetic energy is
A
stored calories
B
energy of movement
C
stored energy
D
energy of light
13) Everything in science wants to be ______
A
equal
B
bigger
C
smaller
D
neutral
14) A measure of the average kinetic energy of the particles in an object is called
A
Plasma
B
temperature
C
Thermal energy
D
Kinetic energy
15) What tool do we use to measure temperature?
A
thermometer
B
erlenmeyer flask
C
graduated cylinder
D
beaker
16) what type of equipment do you use to measure the volume of an irregularly shaped object?
A
erlenmeyer flask
B
thermometer
C
graduated cylinder
D
beaker
17) an endothermic reaction results in
A
no change
B
temperature increase
C
temperature decrease
18) an exothermic reaction results in
A
no change
B
temperature decrease
C
temperature increase
19) what is matter?
A
anything that has mass
B
anything that takes up space
C
anything that has mass and takes up space
D
anything that takes up energy
20) true or false....heat can be lost, destroyed or disappear?
A
true
B
false
*select an answer for all questions
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