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Science Review
Test Description: Chapters 10,11, 12 REVIEW
Instructions: Answer all questions to get your test result.
1) Chopping wood is an example of
A
evaporation
B
alloy
C
physical change
2) An ___________ is a mixture of two or more metals, or a mixture of metals and nonmetals.
A
alloy
B
compounds
C
evaporation
3) The change of liquid into a gas is called
A
evaporation
B
chemical change
C
distillation
4) A piece of mesh or screen that holds back large pieces in a mixture is a/ an
A
alloy
B
distillation
C
filter
5) When some metals react chemically with sulfar in the air, ___________ forms.
A
tarnish
B
alloys
C
bases
6) Weak _______are found in many foods such as lemons and oranges.
A
compounds
B
bases
C
acids
7) A process called _________ can seperate salt and water from salt water
A
chemical change
B
physical change
C
distillation
8) Substances that taste bitter and have a slippery, soapy feel are _________.
A
compounds
B
bases
C
acids
9) Two or more elements that are chemically combined are _______________.
A
physical change
B
compounds
C
acids
10) Burning a match is an example of ______________.
A
physical change
B
chemical change
C
tarnish
11) Simple Machines can be combined to make a _____________
A
balanced forces
B
compound machine
C
accelerator
12) stored enery is ______________
A
potential energy
B
kinetic energy
C
acceleration
13) An object's speed and direction of motion is its ______________.
A
velocity
B
balanced forces
C
speed
14) Force is measured in units called
A
inches
B
meters
C
newtons
15) A change of speed or direction of an objects motion is called ______________.
A
acceleration
B
balanced forces
C
accelerator
16) Forces that are unequal in size, or opposite in direction are ________________.
A
balanced forces
B
unbalanced forces
C
forces
17) THe force that acts over a distance and pulls objects together.
A
unbalanced forces
B
velocity
C
gravity
18) The energy of motion is
A
potential energy
B
stored energy
C
kinetic energy
19) The distance an object moves in a certain amount of time.
A
speed
B
newtons
C
velocity
20) Forces that are equal in size and are opposite in direction are
A
balanced forces
B
unbalanced forces
C
unbalanced
*select an answer for all questions
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