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Unit 2 Atoms

Total questions: 93

Worksheet time: 1hrs 11mins

Name
Class
Date
1.
Makes up the atomic mass...
a)
protons and electrons
b)
protons
c)
neutrons
d)
protons and neutrons
2.
Purest form of a substance...
a)
element
b)
proton
c)
compound
d)
molecule
3.
If an element has an atomic number of 12, how many electrons will it have if it has a neutral charge?
a)
6
b)
24
c)
12
4.
What is the maximum number of electrons that can go on the second energy level?
a)
18
b)
8
c)
2
d)
1
5.
How many neutrons are in mercury?
a)
80
b)
200.59
c)
121
d)
201
6.
How do you determine the number of neutrons in an atom?
a)
subtract the atomic mass from the atomic number
b)
subtract the atomic number from the rounded atomic mass
c)
add the protons and electrons
7.
The area around the nucleas that contains electrons...
a)
nuclear clouds
b)
quarks
c)
electron cloud
d)
neutron cloud
8.
Which of the following is the small unit of matter?
a)
element
b)
compound
c)
atom
d)
electron
9.
Which of the following particles determines the identity of an element?
a)
electron
b)
proton
c)
neutron
d)
quark
10.
What is the atomic mass of chlorine, if it an atom has 17 protons and 18 neutrons?
a)
17
b)
18
c)
35
d)
40
11.
Vertical columns are called...
a)
periods
b)
stacks
c)
metals
d)
groups
12.
What is the atomic number for this atom?
a)
7
b)
14
c)
3
d)
21
13.
What is the atomic mass of this element
a)
10
b)
20
c)
21
d)
31
14.
The mass of one proton is equal to the mass of one...
a)
neutron
b)
electron
15.
What subatomic particle has no effect on the mass of the atom? 
a)
proton
b)
neutron
c)
electron
16.
Which statement best describes the locations of the subatomic particles?
a)
The protons and electrons are found in the nucleus, while neutrons are in the cloud outside the nucleus
b)
The neutrons are in the nucleus, while the protons and electrons are in the cloud outside the nucleus
c)
The protons and neutrons are in the nucleus, while the electrons are in the cloud outside the nucleus
d)
The electrons and neutrons are in the nucleus, while the protons are in the cloud outside the nucleus
17.
What is the atomic mass of the atom pictured? 
a)
9
b)
10
c)
18
d)
19
18.
What is the biggest difference between an atom of cobalt (Co) and an atom of nickel (Ni) as shown in the periodic table entries?
a)
An atom of nickel has more protons.
b)
An atom of cobalt has more electrons.
c)
An atom of cobalt has a lower number of neutrons.
d)
An atom of nickel has a higher value for atomic mass.
19.
Fluorine, chlorine, bromine, iodine, and astatine make up Group 17, the halogens. Why are these elements grouped together?
a)
They are all very reactive nonmetals with similar chemical properties.
b)
They are all nonreactive gases with similar physical properties.
c)
Their atoms all have eight electrons in their outer energy levels.
d)
They all have the same atomic number.
20.
Which of the following best describes the properties of metals?
a)
hard, brittle, and nonconductive
b)
liquid, dark, and conductive
c)
shiny, malleable, and conductive
d)
soft, oily, and very reactive
21.
What is the name of the group that never reacts--ever ever they are stable with a full outermost ring!!!
a)
noble gases
b)
transition
c)
halogens
d)
borons
22.
Each row in the periodic table is called a 
a)
group
b)
period
c)
cluster
d)
unit
23.

The chart below lists some substances and their symbols. How many of these substances are examples of elements?

a)

1

b)

2

c)

3

d)

4

24.

What makes elements and compounds different from mixtures? Elements & compounds-

a)

have a constant composition (pure substances)

b)

are made of gases

c)

Will not change when heated

d)

conduct electric current

25.

Mixtures are different than pure substances because mixtures-

a)

have lower boiling points

b)

can be separated physically

c)

are less dense than pure substances

d)

contain only one type of atom

26.

Which of the following is true of oxygen?

a)

Oxygen is an element because its most basic unit is a single type of atom

b)

Oxygen is a compound because its most basic unit is a single type of atom.

c)

Oxygen is a mixture because its most basic unit contains more than one particle.

d)

Oxygen is a compound because its most basic unit contains more than one type of particle.

27.

Beatriz wants to make a mixture out of her bowl of blueberries. Which of the following would turn her bowl of blueberries into a mixture?

a)

adding more blueberries to the bowl

b)

adding raspberries to the bowl

c)

cutting up the blueberries

d)

mashing the blueberries

28.
When two or more different types of atoms chemically combine they form a ... 
a)
Compound
b)
Heterogeneous Mixture
c)
Molecule
d)
Homogeneous Mixture
29.
The basic unit of a chemical element is known as... 
a)
Element
b)
Compound
c)
Atom
d)
Mixture
30.
What is anything that has mass and takes up space known as?
a)
Mass
b)
Atom
c)
Molecule
d)
Matter
31.
What is a substance that cannot be broken down by any physical or chemical means?
a)
Molecule
b)
Compound
c)
Element
d)
Mixture
32.
What is a substance called when it has two or more parts that have physically combined, but not chemically?
a)
Molecule
b)
Element
c)
Compound
d)
Mixture
33.

Which of the following is a difference between a mixture and a compound?

a)

A compound is chemically combined. A mixture is physically combined

b)

A compound creates a new substance with new properties. A mixture keeps its properties

c)

A mixture can be easily separated by a physical change. A compound requires a chemical change to be separated.

d)

All of the above

34.
If a student makes Kool-aid and the components are dissolved together in water you could say 
a)
The components cannot be separated
b)
The components will turn freezing cold
c)
The components are chemically combined
d)
The components are physically combined
35.

Trevor brought in two gold coins. One is large and one is small. Jayla says that the gold coins are made of different sized atoms because one coin is bigger than the other. Which statement below is correct?

a)

Jayla is wrong because bigger coins mean bigger atoms.

b)

Jayla is wrong because they are both gold so they have the same atoms it is just that the bigger coin has more gold atoms.

c)

Jayla is wrong because all atoms are the exact same size regardless of what type of element they are talking about.

d)

Jayla is right because gold atoms are bigger than all other atoms.

36.

What is the atomic number of Neon?

a)

10

b)

20.18

c)

10.18

d)

21

37.
How many protons are in Beryllium?
a)
4
b)
9
c)
5
d)
2
38.
How many neutrons are in a Gold atom?
a)
79
b)
196
c)
118
d)
275
39.
The majority of an atom's mass exists where?
a)
In the nucleus
b)
In the electron cloud
c)
In the space between the nucleus and the electrons
d)
In the neutrons
40.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
41.
Protons have a ___ charge
a)
neutral
b)
negative
c)
positive
d)
square
42.
Electrons have a ___ charge
a)
positive
b)
neutral
c)
negative
d)
strange
43.
Neutrons are ____
a)
neutral
b)
positive
c)
negative
d)
oval
44.
AMU stands for 
a)
atoms must unify
b)
atomic mass utility
c)
atomic mass unit
d)
a mini unicorn
45.
According the the text, the mass number is the sum of these two particles.
a)
protons and electrons
b)
neutrons and electrons
c)
electrons and nucleus
d)
protons and neutrons
46.
Protons and neutrons each have an AMU of 
a)
1.0
b)
2.0
c)
0.5
d)
1/1840
47.
The nucleus of an atom contains
a)
protons and electrons
b)
electrons and neutrons
c)
protons only
d)
neutrons and protons
48.
The atomic number is the number of ____ in an atom. 
a)
neutrons
b)
protons
c)
protons and neutrons
d)
electrons
49.
Gold has a mass number of 197. Mass numbers are the 
a)
sum of protons and electrons
b)
sum of neutrons and electrons
c)
sum of protons and neutrons
d)
difference of protons and neutrons
50.
An element with an atomic number of 9 and a mass number of 20 has ___ neutrons.
a)
9
b)
10
c)
11
d)
12
51.

Which of the following statements is true concerning acids and bases?

a)

acids and bases don't react with each other

b)

acids mixed with bases neutralize each other

c)

acids mixed with bases make stronger bases

d)

acids mixed with bases make stronger acids

52.

True or false: bases are sometimes called alkaline.

a)

True

b)

False

53.

Which is the correct set of acid properties, as described by Boyle:

a)

sour taste, corrosive, change litmus from red to blue

b)

sour taste, corrosive, change litmus from blue to red

c)

sweet taste, slippery, change litmus from blue to red

d)

sour taste, slippery, change litmus from blue to red

54.

Neutral solutions have a pH of:

a)

0

b)

1

c)

7

d)

14

55.

Which is true?

a)

pH of less than 7 is basic; pH of more than 7 is acidic

b)

pH of less than 7 is acidic; pH of more than 7 is basic

56.

Vinegar, fruit juice, and cola are examples of:

a)

strong acids

b)

strong bases

c)

strong bases

d)

weak acids

57.

Is pure water acidic, basic, or neutral?

a)

Acidic

b)

Basic

c)

Neutral

58.

Vinegar is an example of:

a)

An acid.

b)

A base.

c)

Neither an acid nor a base.

59.

Tums and Milk of Magnesia are examples of:

a)

Acids

b)

Antacids

c)

Neither acids nor bases.

d)

Both antacids and bases.

60.
Which has a bitter taste?
a)
Base
b)
Acid
c)
flagella
d)
cila
61.
Which has a pH below 7?
a)
Acid
b)
Base
62.

What pH is the strongest base?

a)

1

b)

7

c)

4

d)

14

63.
Tastes Sour
a)
Acids
b)
Bases
c)
Salts
d)
All
64.
Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?
a)
strongly acidic
b)
slightly acidic
c)
strongly basic
d)
slightly basic
65.
Which of these pH values would indicate that a solution is a weak base?
a)
4
b)
5.6
c)
8
d)
13
66.

Which of the following is the strongest base?

a)

oven cleaner - 13.5

b)

lemon juice - 2.5

c)

soap - 10

d)

blood - 7.4

67.

Which of the following is the weakest base?

a)

oven cleaner - 13.5

b)

lemon juice - 2.5

c)

soap - 10

d)

blood - 7.4

68.

Which of the following is the strongest acid?

a)

oven cleaner - 13.5

b)

lemon juice - 2.5

c)

soap - 10

d)

blood - 7.4

69.

Which of the following is the strongest base?

a)

soap - 10

b)

HCL - 0

c)

blood - 7.45

d)

soft drink - 3

70.

Acid is?

a)

A substance that reacts to metals and carbonates, and has a Ph of below 7.

b)

Often used in drain cleaner.

c)

Something that can only be found in a lab

d)

A bitter tasting substance

71.

A base is

a)

A substance that feels slippery, has a higher Ph than 7, and is often used in drain cleaner.

b)

Has a Ph of below 7 and can react to metal and carbonates

c)

Is only found in a lab

d)

Something water can never be

72.

You can neutralize acid by adding a base that is just as strong?

a)

Ture

b)

False

73.

When you neutralize acid with a base you create

a)

a Salt and water

b)

You can not neutralize acid with a base

c)

You create carbon dioxide

d)

A moderate sized explosion

74.

A substance with a ph of higher that 7.5 is a?

a)

Home dog doggity

b)

Base

c)

Acid

d)

Salt

75.

A substance with a ph of lower than 7 is a

a)

Acid

b)

True OG

c)

Base

d)

Salt

76.

Instant coffee is made by dissolving a powder in hot water. Instant coffee is a ___________________ .

a)

pure substance

b)

mixture

77.

Baking soda is the common name for sodium bicarbonate, or NaHCO3. It can be produced through chemical reactions involving carbon dioxide and sodium hydroxide.

a)

pure substance

b)

mixture

78.
Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –
a)
a gas at room temperature.
b)
made of two different elements.
c)
given off by green plants.
79.

Chex mix contains pretzels, rye chips and chex cereal. It is an example of a(n)

a)

solution/ homogeneous mixture

b)

heterogeneous mixture

c)

element

d)

compound

80.

What is an atom?

a)

The smallest unit of matter

b)

The smallest unit of measurement

c)

Your next door neighbor

81.

Which part of the atom has a positive charge?

a)

Proton

b)

Neutron

c)

Electron

82.

Which part of the atom has a negative charge?

a)

Proton

b)

Neutron

c)

Electron

83.

Which part of the atom has a neutral charge?

a)

Proton

b)

Electron

c)

Neutron

84.

What is the center of the atom called?

a)

Orbital

b)

Ring

c)

Nucleus

85.

Electrons move around the orbital of the atom. T/F?

a)

False

b)

True

86.

Which particles are found in the nucleus?

a)

Electrons and protons

b)

Electrons and neutrons

c)

Protons and neutrons

87.

What does the atomic number tell you?

a)

The number of neutrons

b)

The number of protons

c)

The number of protons + neutrons

88.

What does the atomic mass tell you?

a)

The number of neutrons + protons

b)

The number of electrons

c)

The number of electrons + protons

89.

What happens to the atomic numbers as you move from left to right on the periodic table?

a)

Increase

b)

Decrease

c)

Stay the same

d)

Nothing

90.

Two elements that have similar physical and chemical properties are most likely in the same...

a)

period

b)

row

c)

group

91.
Which elements are in the same period?
a)
A & F
b)
F, B & D
c)
E & D
d)
F & B
92.
Is silicon a metal, nonmetal or metalloid?
a)
Metal
b)
NonMetal
c)
Metalloid
93.
As you move across the periodic table atoms tend to get smaller because, ______________.
a)
the atoms have more mass.
b)
the atoms have less mass
c)
the atoms have more protons.
d)
the atoms have less electrons.

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