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SS Chem Review Sem1

Total questions: 141

Worksheet time: 2hrs 34mins

Name
Class
Date
1.

Place the following in order

a)

Question

b)

Hypothesis

c)

Experiment

d)

Conclusion

e)

Analyze

1)
2)
3)
4)
5)
2.

After you make an observation you state the ____________?

a)

Problem/Question

b)

Hypothesis

c)

Conclusion

d)

Research

3.

An educated GUESS OR PREDICTION

a)

CONCLUSION

b)

RESEARCH

c)

ANALYZE

d)

HYPOTHESIS

4.

LISTING PROCEDURES AND MATERIALS ARE PART OF THE __________?

a)

EXPERIMENT

b)

QUESTION

c)

HYPOTHESIS

d)

CONCLUSION

5.

CHARTS AND GRAPHS ARE ALL PART OF ___________.

a)

PROCEDURES

b)

ANALYZING DATA

c)

MATERIALS

d)

QUESTION

6.

A SUMMARY OF YOUR RESULTS

a)

CONCLUSION

b)

HYPOTHESIS

c)

QUESTION

d)

DATA

7.
A series of steps used to answer questions and solve problems is called the...
a)
hypothesis
b)
scientific method
c)
data
d)
first aid
8.

The Scientific Method is...

a)

the way scientists make problems and ask questions.

b)

the way scientists answer questions and solve problems.

c)

the way scientists never solve problem.s

9.

Which of the following is a statement that describes something that happens in nature that seems to be true all of the time?

a)

theory

b)

hypothesis

c)

scientific law

d)

conclusion

10.
A hypothesis is also know as a what?
a)
A Wild Guess
b)
An Experiment 
c)
Random Thought
d)
Educated Guess
11.

Which choice is a testable hypothesis?

a)

Ocean water is too salty.

b)

Water heats faster if it contains salt.

c)

Summer is nicer than fall.

d)

Dogs are better than cats.

12.

How many variables should be tested at one time in a scientific investigation?

a)

none

b)

one

c)

two

d)

three

13.

Why do scientists repeat their experiments?

a)

to avoid making observations

b)

to throw out the information they collected earlier

c)

to make sure that the information they collected is reliable

14.

Information from which a conclusion can be drawn. This is what you collect when you are performing your investigation:

a)

control group

b)

experiment

c)

inference

d)

data

15.
In order to make an inference, you must have:
a)
Make observations with all senses
b)
Made 3 other observations
c)
Background knowledge
d)
A hypothesis in mind first
16.
In a hypothesis written in the "If, then" format, which variable comes first?
a)
Independent
b)
Dependent
17.
In a hypothesis written in the "If, then" format, which variable comes second?
a)
Independent
b)
Dependent
18.
The easy way to pick out an experiments responding (DV) variable is to look for:
a)
What was purposefully changed
b)
Number of trials
c)
What's being measured
d)
The test group
19.

Around 400 BC, Greek philosopher Democritus proposed that matter is made of indivisible particles called:

a)

Plum pudding

b)

Atomos

c)

Bohr

d)

Electrons

20.

What is the independent variable on this graph?

a)

Year

b)

Number of Visitors

c)

Visitors to a Park

d)

none of these

21.

A solid is a state of matter that has a(n)

a)

indefinite volume and indefinite shape

b)

definite volume and a definite shape

c)

definite volume and an indefinite shape

d)

indefinite volume and a definite shape

22.
In which state of matter are particles packed tightly together in fixed positions?
a)
gas 
b)
solid
c)
liquid
d)
plasma
23.
Particles of a liquid
a)
are tightly packed together and stay in a fixed position
b)
have no viscosity
c)
decrease in volume with increasing temperature
d)
are free to move in a container but are in close contact with one another
24.
In which state of matter do particles spread apart and fill all the space available to them? 
a)
crystal
b)
liquid
c)
gas
d)
solid
25.
The change from a  liquid to solid, or the reverse of melting, is called
a)
condensation
b)
boiling
c)
sublimation
d)
freezing
26.

The freezing point of water is the same as its

a)

melting point

b)

boiling point

c)

sublimation point

d)

evaporation point

27.

An uncovered pot of soup is simmering on a stove, and there are water droplets on the wall above the back of the stove. What sequence can you infer has occurred?

a)

melting, then boiling

b)

freezing, then thawing

c)

vaporization, then condensation

d)

condensation, then vaporization

28.
Which state of matter undergoes changes in volume most easily?
a)
solid
b)
liquid
c)
gas
d)
frozen
29.
During the process of sublimation
a)
a solid turns directly into a gas
b)
a solid turns into a liquid
c)
a gas turns directly into a solid 
d)
 a liquid turns into a gas
30.
As a material is heated, it's particles....
a)
get smaller
b)
slow down
c)
get cooler
d)
move more quickly
31.
A solid whose name comes from a Greek word meaning "without form."
a)
colloid
b)
amorphous
c)
plasma
d)
liquid crystals
32.
A measure of the average kinetic energy of the particles in a sample of matter.
a)
temperature
b)
meter
c)
second
33.

A __________ has a definite shape and a definite volume.

a)

Gas

b)

Liquid

c)

Solid

d)

Plasma

34.

Two flasks each contain water at 25 degrees Celsius. Which one has more heat energy?

a)

They have the same heat energy because they are the same temperature.

b)

The one on the right has more heat energy because it has less water.

c)

The one on the left has more heat energy because it has more water.

35.

Which of the following is true when particles gain thermal energy?

a)

Particles move more slowly.

b)

Particles move closer together.

c)

Particles stop moving.

d)

Particles move further apart.

36.

When a substance changes directly from a gas to a solid, it is called :

a)

Deposition

b)

Sublimation

c)

Condensation

d)

Vaporization

37.

This diagram represents particles in a __________ state.

a)

solid

b)

liquid

c)

gas

d)

plasma

38.

The temperature at which a liquid changes to a gas

a)

Melting Point

b)

Boiling Point

c)

Sublimation Point

d)

Heat of Fusion

e)

Heat of Vaporization

39.

The amount of energy needed change a substance from a solid phase to a liquid phase

a)

Melting Point

b)

Boiling Point

c)

Freezing Point

d)

Heat of Fusion

e)

Heat of Vaporization

40.

The amount of energy required for the liquid at the correct temperature to become a gas.

a)

Melting Point

b)

Boiling Point

c)

Freezing Point

d)

Heat of Fusion

e)

Heat of Vaporization

41.

Which of the following is NOT a part of the Kinetic Theory of Matter?

a)

All matter is made up of tiny particles.

b)

Particles are always moving in random paths

c)

Occasionally, particles stop moving.

d)

The type of movement of particles depends on the amount of energy.

42.

What happens to the average kinetic energy of matter when it is heated?

a)

It increases

b)

It stays the same

c)

It decreases

d)

It cannot be determined

43.

What state of matter is shown in the image?

a)

Solid

b)

Liquid

c)

Gas

d)

Thermal Energy

44.

If the atoms of an object are moving fast, the temperature would be...

a)

High

b)

Low

45.

When the temperature of matter decreases the particles ...

a)

speed up and move farther apart

b)

slow down and move farther apart

c)

speed up and move closer together

d)

slow down and move closer together

46.

When thermal energy is added to a substance, the substance's particles move:

a)

More rapidly at an increased distance from each other.

b)

More slowly with a greater distance between each other.

c)

More rapidly with less distance between each other.

d)

More slowly with a reduced distance between each other.

47.

In the following, what is the unknown variable:

What is the volume of a balloon if it contains 3.2 moles of helium at a temperature of 20⁰C and 1.2 atm?

a)

P

b)

V

c)

n

d)

T

48.

Which of the following variables is NOT correctly matched with its value for this problem:

What pressure is required to contain 0.023 moles of nitrogen gas in a 4.2 L container at a temperature of 20⁰C?

a)

V = 4.2 L

b)

R = 0.0821 L⋅atm∕mol⋅K

c)

n = 0.023 mol

d)

P = 20⁰C

49.

What is the correct value for T in the following problem:

What pressure is required to contain 0.023 moles of nitrogen gas in a 4.2 L container at a temperature of 20⁰C?

a)

T = 0.23 K

b)

T = 293 K

c)

T = 4.2⁰C

d)

T = 20⁰C

50.

Solve the following probem:

What pressure is required to contain 0.23 moles of nitrogen gas in a 4.2 L container at a temperature of 20⁰C?

a)

1.32 atm

b)

0.048 atm

c)

2.49 atm

d)

19.32 atm

51.

When Temperature of a gas increases, the Volume will ____________________

a)

Increase

b)

Decrease

c)

Stay the Same

52.

When Temperature of a gas increases, the Pressure will ____________________

a)

Increase

b)

Decrease

c)

Stay the Same

53.

When Volume of a gas increases, the Pressure will ______________

a)

Increase

b)

Decrease

c)

Stay the Same

54.

What is the Standard for Temperature and Pressure?

a)

273 K and 1 atm

b)

273 C and 1 kPa

c)

273 F and 1 mmHg

d)

273 K and 1 Torr

55.

Which container will have a lower pressure?

a)

left

b)

right

c)

they both have the same pressure

56.

A container holds three gases: oxygen, carbon dioxide, and helium. The partial pressures of the three gases are 2.00 atm, 3.00 atm, and 4.00 atm, respectively. What is the total pressure inside the container?

a)

900 atm

b)

0.90 atm

c)

9.00 atm

d)

920 atm

57.

In a mixture of gases, each gas contributes to the total pressure. The individual contribution of each gas is known as the _________________.

a)

partial volume

b)

partial pressure

c)

molar mass

d)

mole ratio

58.

Match the Following

a)

Element

1.

A substance that cannot be broken down into simpler substances by chemical means.

b)

Atom

2.

The smallest unit of an element that keeps the element’s chemical properties.

c)

Nucleus

3.

The dense center of an atom containing protons and neutrons.

d)

Proton

4.

Positively charged particles found in the nucleus of an atom.

e)

Neutron

5.

Particles with a neutral charge found in the nucleus of an atom.

59.

Using a periodic table (you can use the one in the textbook) order the following elements by mass number, least to greatest.

a)

Hydrogen

b)

Boron

c)

Gallium

d)

Thallium

e)

Radon

1)
2)
3)
4)
5)
60.

Using a periodic table (you can use the one in the textbook) order the following elements by # of valence electrons, least to greatest.

a)

Potassium

b)

Barium

c)

Carbon

d)

Oxygen

e)

Neon

1)
2)
3)
4)
5)
61.

How many electron shells does the pictured atom have?

a)

1

b)

2

c)

3

d)

4

62.

How many valence electrons does the pictured atom have?

a)

20

b)

3

c)

2

d)

4

63.

A horizontal row of elements in the periodic table

a)

Molecule

b)

Period

c)

Family

d)

Atom

64.

The smallest particle of an element.

a)

Element

b)

Molecule

c)

Atom

65.

A substance that cannot be broken down into other substances by chemical or physical means.

a)

Covalent bond

b)

Atom

c)

Element

66.

A combination of two or more atoms

a)

Period

b)

Molecule

c)

Atom

d)

Family

67.

A physical model that depicts the atom as a small positively charged nucleus with electrons in orbit at different levels.

a)

Covalent bond

b)

Ionic bond

c)

Bohr Model

d)

Electron dot diagram

68.

Elements in the same vertical column of the periodic table; also called group

a)

Family

b)

Atom

c)

Element

d)

Metals

69.

What is one way Neutrons are different from electrons?

a)

they both are negative

b)

neutrons have no charge, while electrons have a negative charge

c)

Both are in the nucleus( center of atom)

d)

Electrons are inside nucleus and neutrons are outside the nucleus.

70.

What is the atomic number?

a)

35

b)

18

c)

17

d)

52

71.

How many protons and electrons does this element have?

a)

35

b)

18

c)

17

d)

52

72.

How many neutrons does Chlorine have?

a)

18

b)

17

c)

35

d)

52

73.

Which part of the diagram represents the proton?

a)

a

b)

b

c)

c

d)

d

74.
Measure mainly of the nuclear particles: protons + neutrons
a)

Subatomic Particles

b)

Atomic Number

c)

Mass Number

d)

Gluons

75.
Value representing the number of protons in an element
a)
Atomic Mass
b)
Mass Number
c)
Valence Electrons
d)
Atomic Number
76.
Where electrons are likely to be found as they travel around the nucleus
a)
Nucleus
b)
Electron Cloud
c)
Within a Proton
d)
Within a Neutron
77.
A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass
a)
Electron Shells
b)
Orbitals
c)
Electron Cloud
d)
Nucleus
78.

If you leave a bottle of perfume open, eventually you will be able to smell the perfume from across the room. Why?

4 lines
79.

What causes a solid to have a definite volume and shape?

a)

rigid structure

b)

strong attractions

c)

volume

80.

The particles in a liquid can overcome some forces of attraction because

(a)  

81.

Describe the movement of particles in a fluid. Use complete sentence(s)

4 lines
82.

Match the following solutions or mixtures.

a)

Solution

1.

Coke

b)

Mixture

2.

Mud

c)

Solution

3.

Saltwater

d)

Mixture

4.

Salad

83.

A ________ is a solution in which no more solute can dissolve.

a)

saturated solution

b)

unsaturated solution

c)

supersaturated solution

84.

In the ideal gas law, P = ​ (a)   , V = ​ (b)   , n = ​ (c)   , R = ​ (d)   , and T = ​ (e)  

Choose from the below words
pressure
volume
moles
gas law constant
temperature
85.

What are our known values? You can pick more than one

a)

P

b)

V

c)

n

d)

R

e)

T

86.

Place the following values in the correct spot

a)0.949 atm
b)0.867 mole
c)305.2 K
1
2
3
1)
2)
3)
87.

Which container will have lower pressure?

a)

First container

b)

second container

88.

You leave a soccer ball outside in the winter. Will the ball end up flatter than it was before?

a)

Only if it's REALLY cold

b)

No

c)

Only if it has a leak

d)

Yes

89.

The more energy that particles have, the ___ they move.

a)

faster

b)

slower

90.

Temperature measures the average ____ _____ of the particles in an object.

(a)  

91.

What part of the atom is indicated by the red sphere?

a)

nucleus

b)

electron cloud

c)

electrons

d)

neutrons

92.

What best describes the nucleus?

a)

Located in the center of the atom, holds the atom's mass, and is positively charged.

b)

Located in the center of the atom, does not hold the atom's mass and is negatively charged

c)

Located in the center of the atom, holds the atom's mass, and has no charge

d)

Located in the center of the atom, does not hold the atom's mass, and is positively charged.

93.

What best describes a neutron?

a)

It is located outside of the nucleus and has a negative charge

b)

It is located inside of the nucleus and has a positive charge

c)

It is located outside the nucleus and has no charge

d)

It is located inside the nucleus and has no charge

94.

What best describes a proton?

a)

It is located outside the nucleus and has a positive charge.

b)

It is located inside the nucleus and has a positive charge.

c)

It is located inside the nucleus and has no mass

d)

It is located inside the nucleus and has no charge.

95.

What best describes an electron?

a)

It is located outside of the nucleus and has a negative charge

b)

It is located outside of the nucleus and has no charge

c)

It is located inside the nucleus and has a mass

d)

It is located inside of the nucleus and has no mass

96.

Which subatomic particle has a negative charge?

a)

proton

b)

neutron

c)

electron

d)

all of the above

97.

An atom's reactivity is determined by it's what?

a)

protons

b)

neutrons

c)

valence electrons

d)

mass

98.

What is an Atom?

4 lines
99.

Atoms are composed of smaller particles called what ?

a)

atoms

b)

subatomic particles

c)

positive particles

d)

nucleus

100.

Protons have what type of charge?

a)

neutral

b)

negative

c)

positive

d)

radioactive

101.

Neutrons have what type of charge?

a)

neutral

b)

negative

c)

positive

d)

radioactive

102.

electrons have what type of charge?

a)

neutral

b)

negative

c)

positive

d)

radioactive

103.

circle the atomic number and underline the atomic mass

104.

A neutral Atom is have the same number of what?

4 lines
105.

Atomic mass is ____+ ____

4 lines
106.

Three protons have a total charge of _______.

a)

+3

b)

0

c)

-3

d)

2

107.

Three neutrons have a total charge of ________.

a)

+3

b)

0

c)

2

d)

-3

108.

A nucleus with three protons and three neutrons has a total charge of ________.

a)

+3

b)

0

c)

-3

d)

+6

109.

How many protons are in a Helium atom? (Hint: same as atomic number!)

a)

2

b)

8

c)

5

d)

6

110.

How many protons are in an Oxygen atom? (Hint: same as atomic number!)

a)

2

b)

8

c)

5

d)

6

111.

This is a neutrally-charged lithium ion. It has 3 protons and 3 neutrons. How many electrons does it have?

a)

9

b)

0

c)

6

d)

3

112.

There are _____ types of atomic orbitals.

a)

1

b)

2

c)

3

d)

4

113.

Match the sub shell shape to its name

a)
1.

S

b)
2.

p

c)
3.

d

114.

Match the number of electrons each sub shell can hold to the sub shell name

a)

2

1.

S

b)

6

2.

p

c)

10

3.

d

d)

14

4.

f

115.

Look at a periodic table. Count how many columns on the periodic table are in the "p" block. How many columns did you find?

a)

2

b)

6

c)

10

d)

14

116.

Forces that holds atoms together within the molecule

a)

intermolecular forces

b)

intramolecular forces

117.

Intermolecular Forces are the forces that exist

a)

Between two or more molecules

b)

Within a single molecule

c)

Only in molecules containing carbon

d)

In all molecules

118.
Which of the following factors plays an important role in the identification of specific intermolecular forces in a molecule?
a)

bond type

b)

density

c)

solubility

d)

molecular polarity

119.

The intermolecular force present in all matter is

a)

Hydrogen Bonding

b)

Ionic Bonding

c)

Dipole-Dipole

d)

London or Dispersion

120.

The strongest IMF is

a)

London/Dispersion

b)

Dipole-Dipole

c)

Hydrogen Bonding

121.

For hydrogen bonding to occur, a molecule must have a hydrogen bonded to

a)

carbon

b)

another hydrogen

c)

Fluorine, Chlorine or Oxygen

d)

Fluorine, Nitrogen or Oxygen

122.

The weaker the intermolecular forces of a substance the _____________ the boiling point

a)

higher

b)

lower

123.

In general, substances with stronger intermolecular forces have ________ boiling points than those with weaker forces

a)

Higher

b)

Lower

c)

The same

124.

Which of the following is NOT a type of intramolecular force?

a)

Covalent bonding

b)

Hydrogen bonding

c)

Ionic bonding

d)

Metallic bonding

125.
 A lone pair is defined as
a)

A pair of bonding electrons

b)

One non-bonding electron

c)

A pair of non-bonding electrons

d)

A pair of electrons on the central atom

126.

The model is based on the principle that electron pairs around the central atom ------ each other.

a)

bond

b)

attract

c)

repel

127.

The ------ of the molecule determines the properties of the compounds.

a)

density

b)

shape

c)

mass

128.

How many lone pair does each Chlorine atom have around it?

a)

6

b)

2

c)

8

d)

3

129.

A linear molecule has _______ bonded pairs and _______ lone pairs on the central atom.

a)

2, 0

b)

0, 2

c)

2, 2

d)

0, 0

130.

A bent molecule has _______ lone pair and _______ bonded pair.

a)

2, 2

b)

0, 0

c)

2, 0

d)

0, 2

131.

What shape is this?

a)

Bent

b)

Linear

c)

Tetrahedral

d)

Trigonal Planar

132.

What molecular shape is this?

a)

Bent

b)

Linear

c)

Tetrahedral

d)

Trigonal Planar

133.

What molecular shape is this?

a)

Bent

b)

Linear

c)

Tetrahedral

d)

Trigonal Planar

134.

A ​ (a)   is a positively charged metal ion. It is positive because metals ​ (b)   electrons when they form ionic bonds.

Choose from the below words
cation
lose
anion
gain
135.

Select the compounds that are covalent

a)

NBr3

b)

Al2O3

c)

CH4

d)

PCl5

e)

FeO

136.
What are oxidation numbers?
a)

Number of electrons in the outer most energy level

b)

Number of protons

c)

Electrons gained or lost in chemical bonding

d)

Number of neutrons gained or lost

137.

For any neutral compound, the sum of the oxidation numbers of the atoms in the compound must equal ..........

a)

-1

b)

+2

c)

0

138.

Select the correct name for KBr?

K = potassium, Br = bromine

a)

potassium bromine

b)

potassium monobromine

c)

phosphorus bromide

d)

potassium bromide

139.

Select the correct name for SrCl2?

Sr = Strontium, Cl = chlorine

a)

strontium dichloride

b)

strontium chloride

c)

strontium chlorine

d)

strontium carbon diioidide

140.

What is the correct name for P2Cl4?

P = phosphorus, Cl = chlorine

a)

Phosphorus chloride

b)

phosphorus tetrachloride

c)

phosphorus chlorine

d)

diphosphorus tetrachloride

141.

What is the name for As4O10?

As = arsenic, O = oxygen

a)

Tetraarsenic decaoxide

b)

arsenic oxide

c)

tetraarsenic tenoxide

d)

tetraarsenic decaoxygen

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