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Properties And Composition Of Matter Unit Test
Test Description: Students prepare for Unit Test 3 on the Composition and Properties of Matter
Instructions: Answer all questions to get your test result.
1) The melting point of a solid is 24.9 degrees Celsius. As heat is added to melt the solid, what happens to the particles?
A
The motion of the particles increases
B
The particles move closer together
C
The particles move farther apart
D
The motion of the particles decreases
2) An example of a property of matter that can be observed without changing the identity of the matter is
A
solubility
B
reactivity
C
ability to rust
D
flammability
3) Which property applies to matter that consists of particles vibrating in place?
A
flows easily at room temperature
B
particles far apart
C
takes the shape of a container
D
has a definite shape
4) What happens to matter as its temperature increases?
A
The particles lose potential energy
B
The average thermal energy of its particles decreases
C
The particles gain kinetic energy
D
The average kinetic energy of its particles decreases
5) An ice cube is placed into a heated pan. What will most likely happen to the molecules in the ice as the ice is heated?
A
The molecules will begin to move slower
B
The molecules will begin to move faster
C
The molecules will begin to increase in density
D
The molecules will begin to condense in air
6) Which characteristic of aluminum allows it to be made into aluminum foil?
A
it is dense
B
it is magnetic
C
it is soluble
D
it is malleable
7) How is plasma different from gas?
A
The particles in plasma can break away from each other
B
The particles in plasma have electric charges
C
The particles in plasma are magnetic
D
The particles in plasma have a set volume
8) Anything that has mass and takes up space is an example of
A
energy
B
matter
C
chemical change
D
temperature
9) How is density calculated?
A
Measuring the amount of mass per unit of volume
B
Multiplying the number of electrons by the number of protons
C
By measuring the force of gravity on an object
D
By multiplying length, width, and height
10) Which statement correctly identifies what happens when two substances chemically react with one another?
A
The substances combine to become fire
B
The substances combine to become water
C
When two substances chemically react, a new substance is formed
D
When two substances chemically react, there is a change in the state of matter
*select an answer for all questions
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