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Unit 2 Test Review 1
Test Description: Review for your test.
Instructions: Answer all questions to get your test result.
1) A water molecule (H2O) is made of ____________atoms.
A
One
B
Three
C
Two
2) True or False Oxygen atoms have a stronger attraction for electrons
A
False
B
True
3) A electronegative atom has a ________ attraction for electrons.
A
Stronger
B
Weaker
4) Attraction between particles of same substances.
A
Adhesion
B
Cohesion
5) A measure of the strength of water's surface.
A
Surface tension
B
Surface film
C
adhesion
6) Attraction between two different substances.
A
Cohesion
B
Adhesion
7) Vaporization is...
A
Converting a liquid to a gas
B
Converting a liquid to a solid
8) A phase change from a solid to a liquid requires the _________ of energy
A
Subtraction
B
Addition
9) A phase change from a liquid to a solid...
A
requires the addition of energy
B
requires the removal of energy
10) A phase change is always_____________ because it can be reversed.
A
Chemical
B
Physical
11) Anything that has mass and volume.
A
Matter
B
Volume
C
Mass
12) The energy of particles in a liquid is ______________ the energy of the particles in a solid.
A
The same as
B
More than
C
Less than
13) Ice is an example of matter in the __________________ state.
A
Plasma
B
Solid
C
Liquid
D
Gas
14) Most matter ________________ when heated.
A
Contracts
B
Expands
15) Matter that has no definite volume of shape.
A
Liquid
B
Gas
C
Solid
16) Matter that has a definite volume but no definite shape.
A
Water
B
Liquid
C
Solid
D
Plasma
17) Matter that has a definite volume and definite shape.
A
Liquid
B
Solid
C
Plasma
D
Gas
18) Physical Change...
A
Changes the composition of matter
B
No change in the composition of matter
19) Chemical change...
A
The composition of matter does not change.
B
The composition of matter changes.
20) When something reacts with oxygen
A
Chemical Change- Reactivity
B
Physical Change- Reactivity
*select an answer for all questions
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