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