Honors PS Semester 1 Review Question Preview (ID: 28529)


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Why does wood float on water?
a) The water is heavier than the wood.
b) The wood is less dense than the water.
c) The wood doesn't float!
d) The water is pushing downward on the wood.

Negatively charged subatomic particle
a) electron
b) proton
c) neutron
d) atomic number

A group of atoms held together by chemical forces.
a) atom
b) molecule
c) element
d) pure substance

A substance made of atoms of 2 or more different elements joined by chemical bonds.
a) compound
b) atom
c) molecule
d) pure substance

An electron found in the outermost shell of an atom and that determines an atom's chemical properties.
a) electron
b) proton
c) neutron
d) valence electron

When ice melts to form water, energy is...
a) taken in.
b) given off.
c) recycled.
d) released.

Which of the following is an example of a physical change?
a) breathing
b) photosynthesis
c) leaves changing colors in the fall
d) dissolving salt in water

What is the density of a substance that has a mass of 10 g and a volume of 5 mL?
a) 2 g/mL
b) 50 g/mL
c) 5 g/mL
d) 0.5 g/mL

Express 0.0000895 in scientific notation.
a) 0.895 x 10^4
b) 89.5 x 10^6
c) 8.95 x10^-5
d) 8.95 x10^5

How many meters are there in 67.5 kilometers?
a) 67,500 m
b) 0.0675 m
c) 0.675 m
d) 6,750 m

350 Pascals are equal to...
a) 350 N/m^2
b) 350 N/cm^2
c) 350 N
d) 350 cm^2

Which of the following is not always an indicator of a chemical reaction?
a) fizzing and foaming
b) formation of heat
c) production of gas
d) change in color

When water vapor condenses into water droplets, energy is...
a) absorbed.
b) released.
c) created.
d) restored.

Which of the following is not a physical property of matter?
a) reactivity
b) luster
c) boiling point
d) freezing point

Which state of matter does not have the freedom to flow?
a) solid
b) liquid
c) gas
d) plasma

How many atoms are contained within 2 molecules of glucose (C6H12O6)?
a) 12
b) 24
c) 48
d) 6

Boyle's Law relates the volume of a gas to its _____________.
a) pressure
b) volume
c) temperature
d)

How many significant figures are there is the number 0.0005680?
a) 1
b) 2
c) 3
d) 4

How many significant figures are there in 758,900. ?
a) 6
b) 4
c) 2
d) 1

What is the formula used to calculate Pascal's Principle?
a) F1/A1=F2/A2
b) P1V1=P2V2
c) P/1=F/A
d) D/1=M/V

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