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Phys Sci Review
Test Description: Content review
Instructions: Answer all questions to get your test result.
1) Atoms consist of 3 particles. What are they and where are they found?
A
protons & neutrons in the electron cloud; electrons in the nucleus
B
protons & neutrons in the nucleus; electrons in the electron cloud
C
protons, neutrons, and electrons in the nucleus
D
protons & electrons in the nucleus
2) Photosynthesis is a chemical reaction that occurs in
A
plants
B
chemicals
C
air
D
animals
3) Why are xrays dangerous?
A
they can damage DNA
B
they have no effect on the body
C
they can cause inflammation
D
they can build up in the liver
4) An alloy is a
A
suspension
B
element
C
compound
D
mixture
5) As heat rises, the distance between atoms increases causing them to break free of each other. This is called
A
vaporization
B
condensation
C
mixture
D
sublimation
6) The equation for the velocity of a wave is v=frequency x wavelength. What equation is used to solve for frequency?
A
velocity x wavelength
B
velocity x frequency
C
velocity x velocity
D
velocity/wavelength
7) The electromagnetic wave with the longest wavelength is
A
infrared waves
B
radio waves
C
x rays
D
gamma rays
8) A chemical change occurs when
A
bonds between atoms break
B
a substance is dissolved in solution
C
a substance changes state
D
a substance is broken
9) What formula represents sodium chloride?
A
H20
B
CO2
C
NaCl
D
KCL
10) The force that exists between objects with mass is called
A
gravity
B
electromagnetic force
C
magnetic force
D
magnetism
*select an answer for all questions
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