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Gable's 3rd 9 wks. EXAM

Total questions: 60

Worksheet time: 1hrs 19mins

Name
Class
Date
1.

The molecules of a substance SLOW DOWN when . . .

a)

energy is added.

b)

energy is taken away.

c)

nothing changes.

2.

Sublimation is _____________ .

a)

a phase change from a solid to liquid to a gas.

b)

a phase change from a solid to a liquid.

c)

a phase change from a gas to a solid.

d)

a phase change from a solid to a gas.

3.

The type of energy which has the GREATEST IMPACT on the state of matter is _________________ energy.

a)

gravitational

b)

sound

c)

radiant

d)

thermal

4.

When molecules are heated the atoms move _____________.

a)

SLOWER

b)

FASTER

c)

they atoms DON'T move.

5.

When molecules are COOLED the atoms move ___________.

a)

SLOWER

b)

FASTER

c)

the atoms DON'T move AT ALL

6.

The molecules of a substance SPEED UP when . . .

a)

energy is added.

b)

energy is taken away.

c)

nothing changes.

7.

A substance that has NO definite shape, but DOES HAVE a definite volume is a _____________.

a)

Gas

b)

Liquid

c)

Solid

8.

Here are 5 cubic centimeters (cm3) (volume) . All together they have a mass of 20 g what is the density?

a)

20 g/cm3

b)

100 grams

c)

4 g/cm3

d)

5 g/cm3

9.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup 
d)
plastic bottle
10.

Why do objects sink or float in H2O?

a)

Because their mass and volumes are equal

b)

Because their densities are using gravity to pull down

c)

Because their densities are heavier or lighter

d)

Because their densities are higher or lower than compared to the density of water

11.
Which box has a higher density?  
a)
Box A
b)
Box B
c)
cannot be determined
d)
they are the same
12.
Density is...
a)
the amount of mass in an object
b)
the amount of space an object takes up
c)
the amount of mass in a given space
d)
the weight of an object
13.

As air pressure DECREASES, density _____________?

a)

INCREASES

b)

DECREASES

14.

As air pressure INCREASES, density _____________?

a)

INCREASES

b)

DECREASES

15.

As temperature heats up, density __________ and volume ______________?

a)

increases,decreases

b)

decreases, increases

c)

increases, increases

d)

decreases, decreases

16.

As temperature gets colder, density __________ and volume ______________?

a)

increases, increases

b)

decreases, increases

c)

increases, decreases

d)

decreases, decreases

17.

What is the Law of Conservation of Mass?

a)

mass of reactants > mass of products

b)

mass of reactants < mass of products

c)

mass of reactants = mass of products

18.

Which is the name of the kind of solid substance formed when 2 liquids are combined shown in this figure?

a)

aqueous

b)

precipitate

c)

acid

d)

synthesis

19.

A chemical reaction that gives OFF heat

a)

Exothermic

b)

Endothermic

20.

If two substances react and the temperature of the mixture decreases. Example the athletic trainer gives you a pack that gets cold when you shake it.

a)

Exothermic reaction

b)

Endothermic reaction

21.

This red piece of pH paper has been dipped into ________ :

a)

An acid

b)

A base

c)

A pH-neutral substance

d)

A buffer

22.
Healthy environments for life have a pH closest to:
a)
1
b)
3
c)
7
d)
10
23.
pH stands for:
a)
Potency of hydrogen
b)
Plurality of hydrogen
c)
Potential of hydrogen
d)
Pleurisy of hydrogen
24.

What is the range of pH values in an acidic solution?

a)

0 - 7.0

b)

7.1 - 14

c)

15-239

d)

pH = 7

25.
A single part of a mixture or solution is called
a)
Mixture
b)
Substance
c)
Solution
d)
An item
26.
Which statement describes a mixture?
a)
2 or more substances that CANNOT be easily separated
b)
2 or more substances that CAN be easily separated
c)
An example of a mixture is lemonade
d)
An example of a mixture is a Kool-Aid
27.
When one substance dissolves in another and the particles  are distributed uniformly throughout the other substance is a
a)
Mixture 
b)
Solution
28.
What might happen if you mixed a strong acid with an equally strong base?
a)
You would see an explosive chemical reaction.
b)
The acid would destroy the base.
c)
The base would destroy the acid.
d)
You'd wind up with a pH-neutral substance.
29.
What might happen if acidic chemicals were emitted into the air by factories?  Choose the best answer.
a)
The acid would destroy metallic elements in the air.
b)
The acid would be neutralized by bases within clouds.
c)
Acid rain might destroy ecosystems and farmland.
d)
Violent chemical reactions would take place within the atmosphere.
30.

Which chemical reacts strongly with most metals?

a)

Acid

b)

Base

31.

Which chemical produces a hydroxide ion (OH-) when mixed with water?

a)

Acid

b)

Base

32.

Which chemical produces hydrogen ions (H+) when mixed with water?

a)

Acid

b)

Base

33.
Atoms that lose electrons become...
a)
negatively charged (cations)
b)
positively charged (anions)
c)
negatively charged (anions)
d)
positively charged (cations)
34.
Atoms that gain electrons become...
a)
negatively charged (anions)
b)
positively charged (cations)
c)
remain neutrally charged
d)
21
35.
Why are ions formed?
a)
To make our lives difficult
b)
Because atoms want 8 valence electrons
c)
Because atoms have the same number of protons and electrons
d)
Because atoms gained neutrons
36.
Anions are _______ that form ____________ ions and __________ electrons.
a)
nonmetals, positive, lose
b)
nonmetals, negative, gain
c)
metals, positive, gain
d)
metals, positive, lose
37.
Cations are _______ that form ____________ ions and __________ electrons.
a)
nonmetals, positive, lose
b)
nonmetals, negative, gain
c)
metals, positive, gain
d)
metals, positive, lose
38.

The two main factors that determine the climate of a region are _____________ and ______________.

a)

altitude and pressure

b)

pressure and temperature

c)

temperature and precipitation

d)

altitude and precipitation

39.

What are isobars?

a)

lines connecting places of equal temperature

b)

lines drawn connecting places of equal pressure

c)

lines drawn to places of different temperatures

d)

lines drawn to places of different pressures

40.
___________is the result of the weight of a column of air pushing on an area.
a)
air pressure
b)
density
c)
volume
d)
none of the above
41.

This is when the rotation of the Earth deflects the direction of the wind.

a)

convergent effect

b)

marginal effect

c)

Coriolis effect

d)

Mariolis effect

42.
Large body  of air with similar temperature, pressure, and humidity.
a)
Cold front
b)
Warm front
c)
High pressure system
d)
Air mass
43.
Front ≡
a)
The opposite of back
b)
The boundary that forms when two air masses with any temperatures meet
c)
the boundary that forms when two air masses with different temperatures meet
d)
The boundary that forms when two air masses with different types of precipitation meet
44.

Of the six factors, which has the biggest effect on climate?

a)

Relief

b)

Ocean currents

c)

Near water

d)

Elevation

e)

Latitude

45.
What type of air mass is created when neither air mass is stronger than another?
a)
Occluded
b)
cold 
c)
Stationary
d)
Warm
46.

Where do MARITIME air masses form?

a)

Over water

b)

Over land

47.

Where do CONTINENTAL air masses form?

a)

Over water

b)

Over land

48.

Which type of air mass is pictured in letter "B" (Montana - considered midwest US )?

a)

Continental polar

b)

Continental tropical

c)

Maritime polar

d)

Maritime tropical

49.

A(n) _____________ is the boundary where two air masses meet.

a)

air mass

b)

storm

c)

collision

d)

front

50.

What does symbol # 4 mean?

a)

stationary front

b)

occluded front

c)

warm front

d)

cold front

51.

The average barometric pressure at sea level is ________.

a)

29.92 mb

b)

24.93 in of Hg

c)

29.92 in of Hg

d)

29.99 mb

52.

Earth's ozone layer _____________________________.

a)

has been thickening over the past several years

b)

filters harmful ultraviolet radiation from the sun

c)

exists only over Antarctica

d)

exist only over the Arctic circle

53.
Increased carbon dioxide may cause global warming by trapping more ____________ in the atmosphere.
a)
water
b)
gases
c)
heat
d)
water vapor
54.

Which of the following gases found in our atmosphere is NOT a greenhouse gas?

a)

carbon dioxide

b)

water vapor

c)

methane

d)

nitrogen

55.

The primary gases in our atmosphere are:

a)

carbon dioxide and oxygen

b)

nitrogen and oxygen

c)

carbon dioxide and nitrogen

d)

hydrogen and oxygen

56.

The greeenhouse gas that is released when fossil fuels are burned for energy are:

a)

nitrogen

b)

oxygen

c)

hydrogen

d)

carbon dioxide

57.

Greenhouse gases in the atmosphere _______ Earth's outgoing infrared radiation.

a)

release

b)

trap

58.

What is a group of atoms joined together called?

a)

an atom

b)

an element

c)

matter

d)

molecule &/ or compound

59.
Are there molecules moving in a solid brick?
a)
yes
b)
no
c)
maybe
d)
not sure
60.

The scientific principal that states all matter is made up of molecular particles that are in constant motion is _____________.

a)

Synthetic Theory of Matter

b)

Kinetic Theory of Matter

c)

Magnetic Theory of Matter

d)

Kinetic Theory of Motion

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