When a closed container of a gas is heated, its pressure increases because

the molecules move faster and strike the sides more often

Which of the following is an example of a safe laboratory procedure?

tying back long hair and loose clothing.

what is phase change?

when matter transitions between solid, liquid, and gas

pressure is inversely proportional to volume

Charles law states that

constant pressure = volume proportional to temp

A chemical reaction that requires an input of energy

What happens when the data in an investigation do not support the original hypothesis?

The hypothesis will be revised.

Which of the following clocks offers the most precision?

a clock that measures time to the nearest tenth of a second.

When gas is heated in a closed container, pressure increases. Why?

The kinetic energy of the gas increases.

Why does gas pressure increase when volume decreases?

The particles speed up and hit the walls with more force

process in which scientists examine other scientist work.

vaporization that occurs only at the surface of a liquid

Which of the following is true about scientific theories?

Scientific theories are never proven.

What does the kinetic theory say about the motion of atoms?

Particles are in constant motion.

How are science and technology related?

Advances in science lead to advance in technology vice versa

Energy (heat) flows from the surroundings into the system

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Physical Science Fall 2019 Final Review

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Answers

1
When a closed container of a gas is heated, its pressure increases because
the number of molecules increases
the molecules move faster and strike the sides more often
the molecules become larger
the molecules become heavier
2
What phase change is this?
Sublimation
Melting
Boiling
Deposition
3
There is no difference between vaporization, evaporation, and boiling.
True
False
4
Which of the following is an example of a safe laboratory procedure?
tying back long hair and loose clothing.
touching hot objects with your bare hands.
testing an odor by directly inhaling the vapor.
eating or drinking from laboratory glass wear.
5
what is phase change?
when two substances make a new substance
when electrons chase protons
just when matter transitions
when matter transitions between solid, liquid, and gas
6
Boyles Law
P=V/2
pressure is unaffected by volume
pressure is inversely proportional to volume
pressure is proportional to volume
7
What is a physical or mental representation of an object or event?
a hypothesis
a theory
a scientific law
a model
8
At room temperature, a substance with a melting point of 40°C is a
solid
gas
liquid
mixture
9
Endothermic, Exothermic or neither?
Neither
Exothermic
Endothermic
10
Computers are an example of ___ that helps people solve problems.
technology
science
cheating on homework
engineering
11
A measurement must include both a number and a(n) ______
unit
none of the above
decimal
precision
12
Endothermic or exothermic?
Endothermic
Exothermic
13
Which action involves a chemical change?
making ice cubes
adding sugar to tea
cutting wrapping paper
baking a cake
14
Charles law states that
constant temp= volume inversely proportional to pressure
constant pressure = volume proportional to temp
constant pressure = temp inversely proportional to volume
constant temp means volume stays the same
15
Endothermic reaction
A chemical reaction that requires an input of conservation
A chemical reaction that requires an input of Matter
A chemical reaction that requires an input of heat
A chemical reaction that requires an input of energy
16
What happens when the data in an investigation do not support the original hypothesis?
Scientist gives up & starts an investigation on a new topic.
The hypothesis will be revised.
Data is altered so that they support the original hypothesis
The data must be incorrect and thrown out.
17
Which of the following clocks offers the most precision?
a clock that measures time to the nearest tenth of a second.
a clock that measures time to the nearest hour.
a clock that measures time to the nearest second.
a clock that measures time to the nearest minute.
18
Which of the following is equal to 1 centimeter?
100 meters
100 millimeters
1/10 of a millimeter
10 millimeters
19
When gas is heated in a closed container, pressure increases. Why?
The potential energy of the gas remains constant.
The potential energy of the gas increases.
The kinetic energy of the gas increases.
The kinetic energy of the gas decreases.
20
What happens to the number in a measurement that is converted from kilometers to meters?
It gets smaller
it stays the same
you can't convert kilometers to meters
it gets larger
21
Why are peer reviews important?
Scientists receives questions and criticism from their peers
Scientists receive comment/suggestions from other scientists
all of the above
Data is checked for accuracy
22
Tap water is ___.
an element
a substance
a mixture
a compound
23
Boyles Law
P1V1T2=P2V2T1
P1V1=P2V2
d=M/v
r2d2
24
____is the closeness of a measurement to the actual value being measured.
temperature
length
precision
accuracy
25
Adding more particles of gas to a closed fixed container will ___________ the pressure.
not affect
increase
eliminate
decrease
26
Formation of a precipitate is usually evidence of:
the separation of a mixture
the formation of a mixture
a physical change
a chemical change
27
The ____ is the variable that changes in response to the manipulated variable.
responding variable
the mixed variable
manipulated variable
controlled variable
28
The measurement 0.014 seconds equals ______ milliseconds.
1.4
0.14
14
140
29
What gas law is this?
Boyle's Law
Chalres law
Gay- Lussac's law
Avogadro's law
30
What phase change does D represent?
Plasmatronic reaction
What?
Evaporation/Condensation
Solid
31
What is deposition
Solid turning to gas
Liquid turning to gas
Neither
Gas turning to solid
32
During a phase change the temperature
stays the same
both
changes
33
Why does gas pressure increase when volume decreases?
It doesn't
Because they are directly related
None of these
The particles speed up and hit the walls with more force
34
What is peer review?
process in which scientists examine other scientist work.
process in which scientist keep their work secret
process in which scientist copy other scientist work.
process where close friends of a scientist review their work
35
What is evaporation?
vaporization that occurs only at the surface of a liquid
change to a solid
I don't know
the formation of a vapor
36
Formation of a precipitate is usually evidence of ___________
a physical change
gas being relased
formation of a solution
a chemical change
37
Which of the following is true about scientific theories?
Scientific theories are never proven.
Scientific theories summarize patterns found in nature.
Scientific theories become hypothesis
Scientific theories become scientific laws.
38
A material that can be hit without shattering is
Flammable
Malleable
Viscous
Hard
39
What does a line graph look like when a manipulated & responding variable have direct proportion
none of the above
a jagged line
a curved line
a straight line
40
Which of the following is not an example of a physical property?
density
flammability
hardness
melting point
41
What does the kinetic theory say about the motion of atoms?
Liquids and solids are always in motion.
Gases are only in motion.
Atoms are sometimes moving.
Particles are in constant motion.
42
What type of graph would be best to use to compare the levels of lead contamination in 6 water wells?
A line graph
A bar graph
A circle graph
A pie graph
43
Relationship in which the ratio of the manipulated variable & responding variable is constant
slope
direct proportion
inverse proportion
interdependent
44
What is the relationship between two variables if the product of the variables is constant?
a direct proportion
an unequal proportion
an inverse proportion
healthy portions
45
How are science and technology related?
Science and technology are not related.
Technology is a branch of natural science.
Advances in science lead to advance in technology vice versa
Science is a branch of technology.
46
Endothermic
Energy (heat) flows from the surroundings into the system
Energy (heat) flows out of the system into the surroundings
47
Which of the following will cause a decrease in gas pressure in a closed container?
reducing the volume
adding more gas
raising the temperature
lowering the temperature
48
How does sublimation occur?
Temperature Increases
Temperature Decreases
49
2X manipulated variable result in 2X responding variable the relationship between the variables
indirect proportion
direct proportion
doubling proportion
proportion
50
Ok... then whats Charles' Law?
V1/P1=V2/P2
V1/T1=V2/T2
I DONT KNOW
P1/T1=P2/T2
51
What is Deposition?
gas to solid
solid to gas
gas to plasma
liquid to solid
52
A pure substance...
Looks the same from every part you look
Looks different from every part you look
53
What is the difference between an element and a compound?
They are the same.
A compound is made up of elements .
A compound is made up of atoms from different elements .
A compound can't be made but an element can.
54
Which statement describes a difference between solids, liquids, and gases?
Solids have a definite volume, and liquids do not have a definite volume.
The particles in a solid are much closer together than particles in a gas.
Temperatures can change a solid to a liquid, but not a liquid to a solid.
Solids take on the shape of their containers, and liquids keep their shape
55
Approximately how many kelvins are equal to 60 degrees Fahrenheit?
439
212
902
289
56
How do scientists communicate the results of investigations?
all of the above
by publishing articles in scientific journals
by exchanging emails
by giving talks at scientific conferences
57
Endothermic, Exothermic or neither?
Exothermic
Neither
Endothermic
58
The three factors that affect pressure are....
force, pressure, volume
temperature, volume, pressure
temperature, volume, number of particles
particles, energy, weight
59
When a homemade oil and vinegar salad dressing is left standing, it separates? Why?
It is a compound.
It is a solution.
It is a colloid.
It is a suspension.
60
Timers at a swim meet used 4 different clocks to time an event. Which time is the most precise?
55.2 s
55.25 s
55 s
55.0 s
61
Which of the following is NOT one of the main ideas of physical science?
Forces cause changes in motion
One of the main branches of natural science is biology
The universe is very old and very large.
Energy transfer from 1 form to another but cant be destroyed
62
The SI base unit of mass is the
pounds
gram
kilogram
ounces
63
What is a statement that summarizes a pattern found in nature?
a scientific law
a fact
a scientific theory
a hypothesis
64
A(An) ____ is a statement that summarizes a pattern found in nature.
hypothesis
scientific law
Scientific method
scientific theory
65
Which material is a poor conductor of heat?
iron
silver
wood
copper
66
How does Earth science overlap with life science?
Earth science involves the study of compositions of matter.
Earth science does not overlap with life science.
Earth science involves the study of Earth's rocks.
Earth science studies systems that include living things
67
If a sealed bottle of gas at 2atm is heated from 100K to 400K, what will the new pressure be?
1atm
4atm
Not enough information
8atm
68
If the volume of a syringe of gas is reduced, what happens to the pressure inside the syringe?
the pressure depends on the type of gas
the pressure would not change
the pressure will increase
the pressure will decrease
69
How is a gas able to fill a container of any size or shape?
Gases are in constant motion due to kinetic theory.
The kinetic theory says that gases are very dense.
Gases aren't real.
Gases are not in motion.
70
Which of these substances is NOT an element?
hydrogen
aluminum
water
iron
71
1660 megawatts of wind generated electricity produced globally each year. This is equivalent to
1,660,000 watts
16,600,000 watts
1,660,000 kilowatts
166,000 kilowatts
72
combined gas law?
relationship between pressure, volume, and temp of gas
yes
gas combining
i dont know
73
How do scientists who speak different languages make their data understandable to one another.
They all use different systems of measurement.
They all use SI
They communicate through a universal translator.
They all must speak French
74
malleability
Chemical Property
Physical Change
Physical Property
Chemical Change
75
Which state of matter has a definite shape and a definite volume?
gas
liquid
plasma
solid
76
Which of the following conversion factors would you use to change 18 kilometers to meters?
1000 m/1 km
1 km/1000 m
100 m/1 km
1 km/100 m
77
A(An) ___ is a way of plotting data to show changes that occur in related variables.
circle graph
bar graph
pie graph
line graph
78
When a gas is heated in a closed container the internal pressure:
Decrease
Increase then Decrease
No change
Increase
79
What is the Combined Gas Law?
P1/T1 = P2/T2
V1/T1 = V2/T2
P1V1 = P2V2
P1V1/T1 = P2V2/T2
80
What is the temperature at which water freezes, expressed in Fahrenheit, Celsius, & kelvins?
32o C, 0oF, 273o K
32o K, 0o C, 273o F
32o F, 0o C, 273o K
32o F, 0oK, 273o C
81
What is a system of knowledge and the methods used to find that knowledge?
Technology
measurement
curiosity
Science
82
Which of the following is not a branch of natural science?
social science
Earth and space science
physical science
life science
83
The type of graph used to show how a part of something relates to the whole is a
direct proportion
circle graph
line graph
bar graph
84
Natural science is divided into life science, Earth and space science, and ____
physics
physical science
chemistry
biology
85
Why are scientific models important?
They prove scientific theories.
Help visualize thing that are complex, very large/very small
They make it harder to understand things.
They never change.
86
On the Celsius scale, at what temperature does water boil?
32 degrees
0 degrees
212 degrees
100 degrees
87
The 2 main areas of physical science are physics and
Chemistry
Life Science
Physics
Earth Science
88
What phase change is this?
Ionization
Deposition
Melting
Boiling
89
Hydrogen gas is stored at 275K and 3.0atm. What is the pressure at 375K? Volume is constant.
4.09atm
2.2atm
.45atm
34,000atm
90
What are the building blocks of all matter?
forces
atoms
magnetic fields
kinetic and potential energy
91
An experiment where only 1 variable, the manipulated variable, is changed at a time is called a(n)
controlled experiment
dependent variable
all of them
independent variable
92
What gas law is this?
Ideal gas law
combined gas law
Charles Boyle's Law
Gay- Avogadro's law
93
In which step of the scientific method is information obtained through the senses?
analyzing data
revising a hypothesis
drawing conclusions
making observations
94
A substance that has little tendency to change into other substances is said to have low
viscosity
reacitvity
conductivity
density
95
What allows a mixture to be separated by filtration?
Liquids are absorbed and the solids are left behind
Different boiling points, one boils first
The liquids evaporate leaving behind the solids
Small particles pass through a filter but larger ones do not
96
A__makes it easier to understand things that are to small, to large, or to hard to observe directly
scientific law
scientific theory
Scientific evidence
scientific model
97
A pure substance...
Has a PERMANENT composition
Has a VARIABLE composition
98
How many significant figures will the answer to the calculation 65.25 X 37.4 have?
6
5
3
4
99
The three values 10.714 m, 12.821 m, & 13.646 m have the same number of
none of these
scientific notation
distance in kelvin
Significant figures
100
An organized plan for gathering, organizing, and communicating information is called a(an)
scientific thinking
critical thinking
scientific method
Plan A

Physical Science Fall 2019 Final Review Flashcards | StudBud