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Chapter 2 Review

Total questions: 95

Worksheet time: 2hrs 33mins

Name
Class
Date
1.

Atoms are made up of ________________

a)

energy

b)

electrons

c)

subatomic particles

d)

gasses

2.

The subatomic particles that make up an atom.

a)

solid, liquid, gas

b)

electrons, protons, nucleus

c)

energy, protons, nucleus

d)

electrons, protons, neutrons

3.

The following subatomic particles are in the nucleus.

a)

Protons and nucleus.

b)

Protons and neutrons.

c)

Protons and electrons

d)

Neutrons and electrons

4.

__________ are negatively charged particles that are in the orbitals around the nucleus.

a)

protons

b)

nucleus

c)

neutrons

d)

electrons

5.

A proton has a ___________ charge.

a)

positive

b)

negative

c)

neutral

d)

massive.

6.

An electron has a _________ charge

a)

positive

b)

neutral

c)

negative

d)

massive

7.

A neutron has _________ charge or is ________.

a)

negative ... neutral

b)

positive .... neutral

c)

no .... negative

d)

no ... neutral

8.

The number of protons in an atom is called the .....

a)

Mass

b)

Atomic Number

c)

Nucleus

d)

Orbital

9.

The mass number of an atom is the mass of ______ + _____

a)

protons + neutrons

b)

protons + electrons

c)

neutrons + nucleus

d)

protons + nucleus

10.
Which of the following chemical formulas represents a compound? 
a)
C3
b)
O2
c)
CH3CHO
d)
H2
11.
Which statement best describes an element?
a)
made from mixture 
b)
thousands in the world
c)

pure, made of only one type of atom

d)
can be separated 
12.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
13.
Are these molecules also compounds?
a)
YES
b)
NO
14.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
15.
a)
Periods
b)
Groups
16.
What is the mass number and name of an element with 8 protons and 8 neutrons?
a)
16 - Carbon
b)
16 - Oxygen
c)
24 - Oxygen
d)
8 - Neon
17.
a)
Periods
b)
Groups
18.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
19.

How many atoms of Iron are in this compound?

a)

1

b)

2

c)

3

d)

4

20.

How many atoms of hydrogen are in

C6H12O6

a)

6

b)

12

c)

18

d)

2

21.

A substance made up of atoms of two or more different elements joined by chemical bonds

a)

Molecule

b)

compound

c)

polar covalent bond

d)

nonpolar covalent bond

22.
How is carbon-12 different from carbon-14?
a)
They have a different number of protons
b)
they have a different number of electrons
c)
they have a different number of neutrons
23.
If a hydrogen atom has 1 proton, 1 electron, and 1 neutron, its atomic number is:
a)
1
b)
2
c)
3
24.
What is an isotope? 
a)
A charged atom
b)
An atom with different amounts of neutrons
c)
An atom with different amounts of protons
d)
A neutral atom
25.

How many electrons can be in the 2nd energy level hold?

a)

1

b)

2

c)

4

d)

8

26.

How many electrons does the first shell hold?

a)

1

b)

2

c)

4

d)

8

27.

How many valence electrons are in the atom shown in the picture?

a)

2

b)

3

c)

5

28.

An ionic bond is formed when

a)

Valence electrons are shared.

b)

Valence electrons surround the cations.

c)

Valence electrons are transferred between atoms.

d)

Valence electrons are completely transferred between two metals.

29.

How many electrons are being shared between the two carbon atoms in the compound ethyne?

a)

1

b)

2

c)

3

d)

6

30.

Why do all bonds form?

a)

to fill the outermost energy level

b)

so an atom can be unstable

c)

so the number of protons and electrons can equal.

d)

so they can gain neutrons.

31.

Valence electrons are found

a)

outermost energy level

b)

innermost energy level

c)

some where in the electron cloud

32.

An atom with 1 valence electron 'needs' a full shell, so it can either gain 7 electrons or lose 1. Which is more likely to occur?

a)

nothing

b)

gain 7

c)

lose 1

33.

The positive ions tend to _____________ electrons.

a)

lose

b)

gain

34.

The negative ions tend to _____________ electrons.

a)

lose

b)

gain

35.

Cations are ions with what kind of charge?

a)

positive

b)

negative

c)

neutral

36.

Ions are charged particles.

a)

True

b)

False

37.
An atom becomes _______ when it loses electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
38.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
39.

What is the charge of anions?

a)

positive

b)

negative

c)

neutral

d)

free of charge

40.

What is the basis of hydrogen bond?

a)

Attraction forces between hydrogen atom bonded with another hydrogen atom

b)

Attraction forces between hydrogen atom bonded with a high electronegativity atom (F, O, N)

c)

Attraction forces between hydrogen atom bonded with a high electronegativity atom (F, O, N) with atom (F, O, N) of another molecule

d)

Attraction forces between hydrogen atom with another hydrogen atom of another molecule

41.

Which type of reaction is:

2 NH3 + H2SO4 → (NH4)2SO4

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
42.
Which type of reaction is: C2H4 + 3 O2 → 2 CO2 + 2 H2O
a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
43.

Which type of reaction is:

2 K + MgBr2 → 2 KBr + Mg

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
44.
Balance this equation.
_CF4 + _Br2 -- _CBr4 + _F2
a)
2,1,2,1
b)
1,2,2,1
c)
1,2,1,2
d)
2,2,2,2
45.

What is the part of the chemical equation in green called?

Fe + S → FeS

a)

products

b)

reactants

c)

yield

d)

input

46.
What two molecules are produced in a combustion reaction?
a)
CO2 + NH4
b)
SiO2 + H2O
c)
H2O + CO2
d)
CO2 + H2O2
47.

When coal burns carbon dioxide is produced from the carbon in coal and the oxygen in air. Which of these is the best evidence that a chemical reaction occurs when coal burns?

a)

The shape of the coal changes

b)

Oxygen is present

c)

A new substance is produced

d)

Coal is made up of more than one element

48.

A chemical reaction is a process in which

a)

all reactants change state

b)

products change into reactants

c)

the law of conservation of mass applies

49.

What type of reaction is present in the unbalanced equation, NaOH + KNO3 ---> NaNO3 + KOH

a)

combination

b)

decomposition

c)

double replacement

d)

combustion

50.

What type of reaction is present in the unbalanced equation, Fe + NaBr --> FeBr3 + Na

a)

combustion

b)

single replacement

c)

double replacement

d)

acid-base

51.

Which of the following best describes the combustion reaction?

a)

hydrocarbon combines with oxygen to produce CO2 and H2O

b)

hydrogen combines with CO2 to produce O2 and H2O

c)

hydrocarbon combines with H2O to produce CO2 and O2

d)

CO2 combines with oxygen to produce hydroxide and H2O

52.

Chemical equations are balanced by placing the appropriate

___________ before the symbols or formulas of reactants and

products.

a)

subscript

b)

exponent

c)

letter

d)

coefficient

53.

Which of the following chemical reaction shows the production of water from hydrogen gas and oxygen gas?

a)

2 H2O → 2 H2 + O2

b)

2 H2 + O2 → 2 H2O

c)

3 H2 + O2 → 3 H2O

d)

3 H2O → H2 + 3 O2

54.

Water is the univeral ____.

a)

solute

b)

solvent

c)

solution

55.

Which one of these is considered a SOLUTE?

a)

Salt

b)

Water

c)

Salt Water

56.

From the diagram in the previous slide which is solvent?

a)

Salt

b)

Water

c)

Salt Water

57.

From the diagram in the previous slide which is solution?

a)

Salt

b)

Water

c)

Salt Water

58.

For example: chocolate milk. Who is the solvent?

a)

cocoa powder

b)

milk

c)

Water

d)

sugar

59.

Which is the solute in this solution? Tea and honey.

a)

tea

b)

honey

60.

Milk

a)

Solution

b)

Suspension

c)

Colloid

61.

Maple Syrup

a)

Solution

b)

Suspension

c)

Colloid

62.

Sand in Water

a)

Solution

b)

Suspension

c)

Colloid

63.

Vinegar

a)

Solution

b)

Suspension

c)

Colloid

64.

Oil in Water

a)

Solution

b)

Suspension

c)

Colloid

65.

Seltzer Water

a)

Solution

b)

Suspension

c)

Colloid

66.

Shaving Cream Foam

a)

Solution

b)

Suspension

c)

Colloid

67.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis
68.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis
69.

What is a functional group?

a)

Group of atoms that give specific characteristics to a molecule

b)

Group of molecules that give specific characteristics to an atom

c)

Group of molecules that make up a group of atoms

d)

Group of atoms that give specific characteristics to an element

70.
If an acid is combined with a base of equal strength, the result will most likely be
a)
a neutral solution.
b)
a stronger acid.
c)
impossible to tell without testing the pH.
d)
a stronger base
71.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
72.

What acid is in our stomach:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

73.
An extremely strong acid would have a pH of...
a)
1
b)
7
c)
9
d)
14
74.
An extremely strong base would have a pH of...
a)
1
b)
7
c)
9
d)
14
75.
Indicators change color in the presence of a(n) _______________.
a)
acid or base
b)
buffer
c)
water molecule
d)
ester
76.
A base has a ___________ taste.
a)
bland
b)
salty
c)
bitter
d)
sour
77.
A base has a _________________.
a)
sour taste
b)
positive ion
c)
slippery feel
d)
pH of 5
78.

Match the following

a)
1.

amino

b)
2.

carboxyl

c)
3.

hydroxyl

d)
4.

methyl

e)
5.

phosphate

79.

What is a functional group?

a)

Group of atoms that give specific characteristics to a molecule

b)

Group of molecules that give specific characteristics to an atom

c)

Group of molecules that make up a group of atoms

d)

Group of atoms that give specific characteristics to an element

80.
Which biomolecule is made of nucleotides and contain you DNA?
a)
Carbohydrate
b)
Lipids
c)
Protein
d)
Nucleic Acid
81.
Which biomolecule helps form muscles?
a)
Nucleic Acid
b)
Carbohydrate
c)
Protein
d)
Lipids
82.
Which biomolecule is responsible for insulation and energy storage?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
83.
Which biomolecule has sugars and starches?
a)
Lipids
b)
Proteins
c)
Carbohydrates
d)
Nucleic Acid
84.

What is the function of carbohydrates?

a)

provides quick energy

b)

stores energy

c)

helps with growth and repair of tissues

d)

stores genetic information

85.

What is the function of lipids?

a)

provides quick energy

b)

stores energy

c)

helps with growth and repair of tissues

d)

stores genetic information

86.

What is the function of proteins?

a)

provides quick energy

b)

stores energy

c)

helps with growth and repair of tissues

d)

stores genetic information

87.
DNA and RNA are examples of...
a)
proteins
b)
nucleic acids
c)
carbohydrates
d)
lipids
88.
The four most common elements found in biomolecules are:
a)
Carbon, Nitrogen, Phosphorus, Bromine
b)
Sulfur, Nitrogen, Iron, Carbon
c)
Sulfur, Phosphorus, Carbon, Oxygen 
d)
Carbon, Oxygen, Nitrogen, Hydrogen
89.
Which biomolecule contains pastas and breads?
a)
Lipid
b)
Protein
c)
Nucleic Acid
d)
Carbohydrate
90.
I am single stranded.
a)
DNA
b)
RNA
c)
Both DNA and RNA
91.
I am a nucleic acid.
a)
DNA
b)
RNA
c)
Both DNA and RNA
92.
I am arranged as a double helix or "twisted ladder."
a)
Both DNA and RNA
b)
DNA
c)
RNA
93.
How would the DNA sequence GCTATA be transcribed to mRNA?
a)
GCUAUA
b)
CGATAT
c)
CGAUAU
d)
GCUTUT
94.
Which of these bases does not exist in RNA?
a)
C
b)
T
c)
U
d)
A
95.
What amino acid is represented by the codon UUA?
a)
Phenylalanine
b)
Tyrosine
c)
Leucine
d)
Stop codon

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