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8th Grade Exam 1
Test Description: Review for semester exam
Instructions: Answer all questions to get your test result.
1) What is the first step of a scientific investigation?
A
drawing a conclusion
B
conducting an experiment
C
making a prediction
D
asking a question
2) An experiment that compares the results from a control group with the results of one or more experimental groups?
A
hypothesis
B
analysis
C
observation
D
controlled experiment
3) One form in which scientists arrange data to analyze results
A
speech
B
analysis
C
graph
D
hypothesis
4) Pieces of information gained through experimentation are called
A
observation
B
predictions
C
scientific methods
D
data
5) Apple juice is an example of
A
homogeneous mixture
B
compound
C
heterogeneous mixture
D
colloid
6) A physical property that is a measure of the amount of matter in an object
A
density
B
volume
C
weight
D
mass
7) The ability of two substances to react and form a new substance such as carbon dioxide
A
suspension
B
physical property
C
chemical property
D
pure substance
8) The production of heat when two substances are mixed might indicate
A
a chemical change is occurring
B
matter is being destroyed
C
photosynthesis is occurring
D
a physical change is occurring
9) An example of a physical change is
A
vinegar and baking soda mixing to form carbon dioxide
B
water freezing into ice
C
making metal
D
an organism aging
10) Which statement is correct
A
neither physical or chemical changes are reversible
B
most chemical changes are not reversible
C
all chemical changes are reversible
D
physical changes are not reversible
*select an answer for all questions
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