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ADV 8th Benchmark Review 2-c
Test Description: Review for 8th grade Benchmark 2
Instructions: Answer all questions to get your test result.
1) Which of the following is not a physical change?
A
boiling
B
freezing
C
melting
D
burning
2) Hydrogen has three isotopes called protium, deuterium and tritium. The atoms of these isotopes have
A
different number of protons
B
the same mass number
C
the same atomic number
D
different number of electrons
3) Isotopes of the same element differ from each other by their
A
number of neutrons
B
atomic number
C
reactivity
D
number of protons
4) If a substance conducts electricity and heat, and it is hard and shiny, it is most likely a
A
a metal
B
a salt
C
an inert gas
D
a non-metal
5) If a substance conducts neither electricity nor heat, and is dull and brittle it is most likely a
A
a salt
B
a metal
C
an inert gas
D
a non-metal
6) A change in speed, direction, or both is a change in a moving object's
A
height
B
reference point
C
mass
D
velocity
7) Velocity is a vector quantity because it has both
A
speed and direction
B
position and mass
C
direction and volume
D
mass and speed
8) Speed can be determined with the formula
A
Distance = speed / time
B
time = distance x speed
C
speed = average speed / time
D
speed = distance / time
9) Density is calculated using the following formula
A
D = mass / volume
B
D = buoyant force x acceleration
C
D = mass / time
D
D = distance / volume
10) According to the Second Law of Newton
A
Force = mass x aceleration
B
Force = acceleration x time
C
Force = mass / volume
D
Force = distance / time
*select an answer for all questions
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