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Physical Science Unit 4 Quiz Review Flashcards | StudBud
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Physical Science Unit 4 Quiz Review
Physical Science Unit 4 Quiz Review
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1
states that volume and temperature are directly proportional
Boyle's law
Charles' law
2
The particles below would represent which state of matter?
gas
solid
plasma
liquid
3
possible energies that electrons in an atom can have
energy levels
orbital
electron cloud
kinetic energy
4
reversible change that occurs when a substance changes from one state of matter to another
phase change
fluid
chemical change
precipitate
5
The picture shows the Bohr's model for which isotope?
Mo - 123
Mo - 81
Tl - 123
Tl - 204
6
Which is not a sign of a chemical change?
color
precipitate
smell
gas
7
Which element is represented below?
Hydrogen
Potassium
Calcium
Yttrium (Y)
8
How is gas pressure affected by increasing the temperature of a substance?
does not change
depends on the identity of the gas
increases
decreases
9
system releases energy to its surroundings
orbital
exothermic
endothermic
vapor pressure
10
equals the number of protons in an atom of an element
atomic number
mass number
electron cloud
pascal
11
visual model of the most likely locations for electrons in an atom
plum pudding model
nucleus
electron cloud
energy level
12
How many electrons can the 1st energy level hold?
18
32
2
8
13
SI unit for pressure
newton
pascal
watt
joule
14
The picture shows the Bohr's model for which isotope?
argon - 35
argon - 18
chlorine - 35
chlorine - 18
15
any solid that forms and separates from a liquid mixture
plasma
precipitate
colloid
deposition
16
system absorbs energy from its surroundings
vapor pressure
exothermic
plasma
endothermic
17
a gas-like state of matter made of positive ions and electrons
plasma
liquid
solid
gas
18
How many protons does phosphorus have?
16
31
not enough information
15
19
Filtration separates substances based on ____.
particle size
boiling points
densities
mass
20
Which of the following is NOT part of the kinetic theory?
Gas particles move independently unless they collide.
Gas particles are far apart.
Gas particles do not attract one another very much.
Gas particles are constantly moving.
21
A gas is at 175 kPa and the temp. is changed to 50
o
C, so the pressure changes to 300 kPa. What was the original temp.?
162.5 oC
188.4 oC
29.2 oC
553.7 oC
22
How many electrons can the 3rd energy level hold?
18
8
32
2
23
a substance that can flow
vapor pressure
precipitate
fluid
solid
24
homogeneous mixture
pure substance
colloid
suspension
solution
25
Distillation separates substance based on ____.
densities
boiling points
particle size
mass
26
dense, positively charged mass located in the center of the atom
proton
nucleus
neutron
electron
27
Italian salad dressing is classified as which of the following?
homogeneous mixture
compound
heterogeneous mixture
element
28
A gas has a volume of 1.2 L and a pressure of 2.4 atm. What is the pressure if the volume is decreased to 500 mL?
0.00576 atm
0.25 atm
1000 atm
5.76 atm
29
Convert 450 kPa to mm Hg.
1108.7 mm Hg
59.98 mm Hg
3376.11 mm Hg
4.44 mm Hg
30
negatively charge subatomic particles
electron
neutron
nucleus
proton
31
Does temperature change during a phase change?
it depends if the substance is being heated or cooled
no
sometimes
yes
32
sum of the protons and neutrons in the nucleus of an atom
mass number
energy level
isotope
atomic number
33
Which of the following is a chemical property of water?
reacts with sodium
colorless liquid
boils at 100oC
density is 1 g/mL
34
Which phase change involves a liquid going to a gas?
boiling
sublimation
melting
condensation
35
pressure of a gas above a liquid
phase change
vapor pressure
colloid
pascal
36
heterogeneous mixture that separates into layers over time
colloid
suspension
solution
pure substance
37
same atomic number but different mass numbers because of a different number of neutrons
ion
atom
isotope
orbital
38
states that pressure and volume are indirectly proportional
Boyle's law
Charles' law
39
The particles below would represent which state of matter?
solid
gas
liquid
plasma
40
neutral subatomic particle that is found in the nucleus
nucleus
proton
neutron
electron
41
Is ice melting a physical or chemical change? Why?
chemical b/c the composition remains the same
physical b/c the composition changes
chemical b/c the composition changes
physical b/c the composition remains the same
42
matter that always has exactly the same composition
pure substance
suspension
solution
coloid
43
contains some particles that are intermediate in size, does not separate into layers
pure substance
colloid
solution
suspension
44
Which state of matter would exist at 10 bar pressure and 200 K temperature?
gas
liquid
not enough information
solid
45
result of a force distributed over an area
phase change
vacuum
pressure
plasma
46
Table salt would be classified as which of the following?
heterogeneous mixture
homogeneous mixture
element
compound
47
positively charged subatomic particle
nucleus
neutron
proton
electron
48
Which atomic model is represented below?
Rutherford's model
Bohr's model
Thomson's model
Dalton's model
49
Which state of matter has an indefinite shape and volume?
gas
liquid
all states of matter
solid
50
How many neutrons does aluminum have if the mass number is 27?
14
13
27
not enough information
