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8.1.5 Phase Change Utah
Test Description: Utah Seed Standards
Instructions: Answer all questions to get your test result.
1) If a substance is heated up what will the molecules be doing?
A
Energy is being added so the molecules are speeding up
B
Energy is being added, so the molecules are slowing down
C
Energy is being removed, so the molecules are slowing down
D
Energy is being removed, so the molecules are speeding up
2) Which is the least dense phase?
A
Solid
B
Gas
C
Liquid
3) Which is a solid?
A
molecules are not moving
B
molecules are moving slowly and relatively close together.
C
molecules are far apart and moving slowly
D
molecules are far apart and moving quickly
4) What happens when you remove heat energy?
A
Moleluces move slower
B
Nothing
C
Molecules move faster
5) If a substance has a density of 1.8 g/cm3, what will happen when placed in water?
A
nothing
B
Float
C
Sink
6) What is the density of this substance? Mass: 20 g ; Volume: 2ml
A
250 g/ml
B
10 g/ml
C
5 g/ml
D
25 g/ml
7) What happens to the temperature during a phase change?
A
Stays the same
B
Goes down
C
Goes up
8) As the Tempeture increases, the density
A
increases
B
stays the same
C
decreases
9) What is the density? Mass: 10g Volume: 5ml
A
5 g/ml
B
2 g/ml
C
1 g/ml
D
50 g/ml
10) What happens to the density if the volume of a substance decrease?
A
The density will decrease
B
The density will increase but the mass will decrease
C
The density will also increase
D
The density will stay the same
*select an answer for all questions
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