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Chapter 8-Matter And Its Uses
Test Description: Review for Chapter 8 Test
Instructions: Answer all questions to get your test result.
1) List a physical property of a bicycle.
A
It is blue.
B
Children younger than 3 cannot ride it.
C
It was made in the USA.
D
It is made of wood.
2) What is a model?
A
A useful representation that aids in studying a subject further.
B
The central core of an atom.
C
The measure of how compact and object is.
D
The part of the nucleus that has a positive charge.
3) Name a chemical property of a car.
A
It can rust.
B
It is made of metal.
C
It is blue.
D
It weighs 4000 pounds.
4) What is a chemical reaction?
A
The rearrangement of atoms within molecules to make new molecules with different properties.
B
Stirring something together.
C
The elements listed on the periodic table.
D
Cutting up paper.
5) What is technology?
A
A scientist and his laboratory.
B
The combination of two atoms.
C
The occurence of a chemical and a physical change.
D
The application of knowledge to accomplish a goal.
6) A molecule that consists of two or more different elements is:
A
an element
B
a chemical reaction
C
an electron
D
a compound
7) What is the difference between a chemical and a physical reaction?
A
A chemical reaction involves chemicals.
B
A chemical reaction can be reversed.
C
A physical reaction makes something move.
D
A chemical reaction results in the formation of a new substance.
8) Why does wood float, but a brick sinks?
A
The wood is less dense than the brick.
B
The wood absorbs the water.
C
The wood is more dense than the brick.
D
The brick weighs more than the wood.
9) How can people\'s choices affect how mater is used?
A
Matter that is more dense will float.
B
People can choose to use a computer for good or for evil.
C
People can use matter every day.
D
People can choose what color they want.
10) The measure of how compact matter is:
A
density
B
chemical reaction
C
atom
D
protons
*select an answer for all questions
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