wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

10chem BM1 Review

Total questions: 112

Worksheet time: 1hrs 24mins

Name
Class
Date
1.

The Law of Conservation of Mass says that matter can neither be __________ or __________.

a)

created; destroyed

b)

recycled; renewed

c)

subtracted; added

d)

joined; separated

2.
In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 
a)
4g
b)
5g
c)
9g
d)
14g
3.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
4.

A student pours 5.49 g hydrochloric acid (HCl) into an open beaker that contains a piece of magnesium (Mg). The Total mass of the product is 5.73 g. What was the mass of the magnesium?

a)

5.71 g

b)

11.22 g

c)

0.24 g

5.
For the equation:
2H2 +  O2 --> 2H2O
How much H2O will be produced if we react 4g of H2 and 32g of O2?
a)
4g
b)
32g
c)
36g
d)
28g
6.

A neutron has what charge?

a)

Positive

b)

Negative

c)

It has no charge (it is neutral)

7.

A proton has what charge?

a)

Positive

b)

Negative

c)

It has no charge (it is neutral)

8.

An electron has what charge?

a)

Positive

b)

Negative

c)

It has no charge (it is neutral)

9.

Which particles are found in the nucleus of an atom?

a)

protons only

b)

neutrons only

c)

protons & electrons

d)

protons & neutrons

10.

What subatomic particles are coloured green in this image?

a)

protons

b)

neutrons

c)

electrons

11.

What two subatomic particles have approximately the same mass?

a)

electrons & neutrons

b)

protons & electrons

c)

neutrons & protons

12.

What is the lightest subatomic particle?

a)

proton

b)

neutron

c)

electron

13.

What is the atomic mass of Neon?

a)

10

b)

20.18

c)

10.18

d)

20

14.
How many protons are in Beryllium?
a)
4
b)
9
c)
5
d)
2
15.

What is the atomic mass of Copper?

a)

63.546

b)

29

c)

29.546

d)

92

16.
How many neutrons are in a Gold atom?
a)
79
b)
196
c)
118
d)
275
17.

What is the atomic mass of Gold?

a)

79

b)

196.97

c)

79.97

d)

275

18.

Bromine has how many Neutrons?

a)

35

b)

80

c)

45

d)

8

19.
How many electrons are in Manganese (Mn) ?
a)
12
b)
25
c)
55
d)
30
20.

What is at the center of every atom?

a)

An electron

b)

A compound

c)

A molecule

d)

A nucleus

21.
What is the role of an electron in an atom?
a)
Electrons live inside the nucleus and carry a neutral charge.
b)
Electrons circle the nucleus and have a positive charge.
c)
Electrons circle the nucleus and have a negative charge.
d)
Electrons live inside the nucleus and have a negative charge.
22.

How many neutrons are in Tungsten

a)

110

b)

74

c)

183

d)

258

23.
Sodium has an atomic number of 11, how many protons does this atom have?
a)
22
b)
11
c)
12
d)
2
24.

How many neutrons are in Phosphorus?

a)

16

b)

15

c)

31

d)

46

25.

How many protons are in Chlorine?

a)

35

b)

18

c)

17

d)

52

26.

What is a valence shell?

a)

Inner most shell of an atom

b)

Outer most shell of an atom

c)

Middle shell of an atom

d)

None of them

27.

The atomic number is equal to _.

a)

the number of protons and electrons

b)

the number of protons only

c)

the total number of protons and neutrons

d)

the number of electrons only

28.
Adding or subtracting neutrons (charge = 0, mass = 1) makes the element change into an...
a)
ion
b)
mixture
c)
isotope
d)
neutral atom
29.
The atomic mass is equal to _.
a)
the number of protons only
b)
the number of neutrons only
c)
the total number of protons and neutrons
d)
the number of protons, neutrons, and electrons.
30.
An atom that has gained or lost electrons is called ...
a)
a winner
b)
an isotope
c)
an ion
d)
a loser
31.

When an atom loses an electron, it becomes a

a)

positive ion

b)

negative ion

c)

neutral ion

d)

neutral atom

32.

An atom has 10 protons and 12 neutrons. What is the mass number?

(a)  

33.

What is the net charge of an atom with 15 protons and 12 electrons?

(a)  

34.

What is the net charge of an atom with 7 protons and 8 electrons?

(a)  

35.

An atom of oxygen has a - 2 charge, how many electrons does it have?

a)

8

b)

10

c)

6

36.

An atom of fluorine has a -1 charge, how many protons does it have?

a)

10

b)

8

c)

9

37.

What did Rutherford discover in his experiment?

a)

nucleus

b)

electrons

c)

neutrons

d)

protons

38.

In which model are atoms imagined as tiny balls?

a)

Dalton

b)

Thomson

c)

Rutherford

d)

Bohr

39.

Who proposed a model with electrons moving in specific layers?

a)

Dalton

b)

Rutherford

c)

Bohr

d)

Thomson

40.

What did Thomson's atomic theory model look like?

a)

A ring with gold foil in the middle.

b)

Electrons orbiting the nucleus like the planets around the sun.

c)

A cloud of electrons floating around the nucleus.

d)

A scoop of chocolate chip ice cream. It had electrons scattered within a ball of positive charge.

41.

What is the mass of a proton?

a)

1840 amus

b)

1 amu

c)

1/1840 amus

d)

It has no mass.

42.

Who first came up with the idea of an atom and called them "atomos"?

a)

o Democritus

b)

o Thomson

c)

o Rutherford

d)

o Bohr

43.
What scientist is best known for his "Plum Pudding" model of the atom?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
44.
How many neutrons does the isotope below have?     89 36Kr
a)
53
b)
36
c)
89
d)
125
45.
What is the name of the pictured isotope?
a)
Copper-29
b)
Copper-63
c)
Copper-34
d)

Copper-92

46.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
5
47.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
48.

What charge does an atom have when it GAINS electrons?

a)

Positive

b)

Negative

c)

Neutral

49.

What subatomic particle changes in an ion?

a)

The number of electrons

b)

The number of protons

c)

The number of neutrons

50.

If an atom gains electrons, the charge will be positive.

a)

true

b)

false

51.

Cations are...

a)

Positive

b)

Negative

c)

Neutral

52.

Anions are...

a)

Positive

b)

Negative

c)

Neutral

53.

Who discover the electron?

a)

Dalton

b)

Rutherford

c)

Thomson

d)

Bohr

54.

Rutherford's "gold-foil" experiment using alpha particle scattering concluded that

a)

the center of the atom is empty

b)

atomic mass is spread over the whole atom

c)

the center of the atom has a negative charge

d)

most of the atom is empty

55.

What experiment was used to discover the nucleus?

a)

Cathode Ray Tube

b)

Gold Foil

c)

Chromatography

d)

Gel Electrophorese

56.

Dalton had 4 points about an atom, which is NOT one?

a)

Atoms combine in whole ratios

b)

An atom of one element will never turn into an atom of another

c)

Electrons have a set size and path

d)

Atoms are indivisible

57.

Which one of these is Dalton's Model?

a)
b)
c)
d)
58.

Which model was created after the discovery of the nucleus?

a)

Dalton's

b)

Rutherford's

c)

Quantum Mechanical

d)

Plum Pudding

59.

Which model was created after the discovery of the electron cloud?

a)

Dalton's

b)

Rutherford's

c)

Quantum Mechanical

d)

Plum Pudding

60.

Who discovered the nucleus?

a)

Rutherford

b)

Bohr

c)

J.J. Thompson

d)

Democritus

61.

What experiment was used to discover electrons?

a)

Cathode Ray Tube

b)

Gold Foil

c)

Chromatography

d)

Gel Electrophorese

62.

Who discovered electrons?

a)

Rutherford

b)

Bohr

c)

J.J. Thompson

d)

Democritus

63.

Which model was created after the discovery of electrons?

a)

Dalton's

b)

Rutherford's

c)

Quantum Mechanical Model

d)

Plum Pudding

64.

Fe3+

a)

Element

b)

Ion

65.

Mg2+

a)

Element

b)

Ion

66.

Cl-

a)

Element

b)

Ion

67.

Cl

a)

Element

b)

Ion

68.

H+

a)

Element

b)

Ion

69.

C

a)

Element

b)

Ion

70.

How many neutrons does this bromine atom have?

a)

35

b)

45

c)

80

71.

What is the mass number of this Neon atom?

a)

10

b)

11

c)

21

d)

20

72.

What does it happen to this atom?

a)

It LOSES electrons

b)

It GAINS electrons

c)

It GAINS protons

d)

It LOSES protons

73.

What charge will result if Nitrogen gains 3 electrons?

a)

+3

b)

+1

c)

-3

d)

-2

74.

All atoms can become stable by...

a)

losing or gaining electrons to obtain a full valence (outer) shell

b)

losing or gaining protons to obtain a full valence (outer) shell

c)

losing or gaining neutrons to obtain a full valence (outer) shell

75.

What charge will the ion have?

a)

+1

b)

-1

c)

+8

d)

-8

76.

What element has this orbital notation?

a)

lithium

b)

beryllium

c)

boron

d)

carbon

77.

What element has this electron configuration?

a)

helium

b)

lithium

c)

beryllium

d)

boron

78.

What element has this electron configuration?

a)

boron

b)

carbon

c)

nitrogen

d)

oxygen

79.

Which element is represented by this electron configuration?

a)

neon

b)

sodium

c)

magnesium

d)

aluminum

80.

Which element is represented by this orbital notation?

a)

carbon

b)

nitrogen

c)

oxygen

d)

fluorine

81.

Which element is represented by this orbital notation?

a)

neon

b)

sodium

c)

magnesium

d)

aluminum

82.

Which of the following is the electron configuration for Fluorine

a)
b)
c)
d)
83.

Which of the following is the electron configuration for neon?

a)
b)
c)
d)
84.

Which of the following is the electron configuration for silicon?

a)
b)
c)
d)
85.

Which of the following is the orbital notation for oxygen?

a)
b)
c)
d)
86.
An electron occupies the lowest energy orbital that can receive it.
a)
Hund’s rule
b)
Pauli exclusion principle
c)
Bohr model of the atom
d)
Aufbau principle
87.
All orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron.
a)
Aufbau principle
b)
Pauli exclusion principle
c)
Hund’s rule
d)
Core Notation
88.
No two electrons in the same atom can have the same four quantum numbers.
a)
Aufbau principle
b)
Pauli exclusion principle
c)
Hund’s rule
d)
Noble gas notation
89.
Which guideline, Hund’s rule or the Pauli exclusion principle, is violated in the following orbital diagrams?
a)
Hund's
b)
Aufbau's
c)
Pauli's Exclusive
90.
Which guideline, Hund’s rule or the Pauli exclusion principle, is violated in the following orbital diagrams?
a)
Aufbau's
b)
Hund's
c)
Pauli exclusive
91.
Electrons are paired based on their spin directions, clockwise and counterclockwise, is what electron configuration rule?
a)
Hund’s Rule
b)
Aufbau Principle
c)
Pauli Exclusion Principle
92.

What is the element?

a)

Neon

b)

Chlorine

c)

Aluminum

d)

Argon

93.

What is the element?

a)

Neon

b)

Chlorine

c)

Aluminum

d)

Argon

94.

What is the element?

a)

sulfur

b)

chlorine

c)

phosphorus

d)

silicon

95.

Which is the electron configuration for beryllium?

a)
b)
c)
d)
96.
What is the noble gas shorthand electron for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p4
97.

What element has the electron configuration 

1s22s22p31s^22s^22p^3  

a)

Nitrogen

b)

Oxygen

c)

Magnessium

d)

Carbon

98.

Which orbital is displayed correctly?

a)

A

b)

B

c)

C

d)

D

99.
How many electrons can the d sublevel hold?
a)
8
b)
10
c)
2
d)
4
100.
The maximum number of electrons that can be placed in an p orbital.  
a)
2
b)
6
c)
10
d)
14
101.
This orbital diagram represents:  
a)
C
b)
B
c)
N
d)
O
102.
What is incorrect about this orbital diagram?
a)
Both arrows in the 2p box should be pointing up
b)
There is nothing incorrect with this diagram
c)
In the there should only be 1 orbital in the first 2p box and one in the 2nd 2p box
d)
All the arrows should be pointing up.
103.
What is incorrect about this orbital diagram?
a)
Both arrows in the 2p box should be pointing up
b)
There is nothing incorrect with this diagram
c)
In the there should only be 1 orbital in the first 2p box and one in the 2nd 2p box
d)
All the arrows should be pointing up.
104.

Which are the four energy sublevels?

a)

s,p,d,f

b)

a,b,c,d

c)

s,t,e,p

d)

d,r,o,f

105.

What is the noble gas configuration for silicon?

a)

[Ne] 3s2 3p1

b)

[Ar] 4s1

c)

[Kr] 5s1

d)

[Ne] 3s2 3p2

106.

The electron configuration 1s2 2s22p6 3s23p6 represents which noble gas?

a)

neon

b)

argon

c)

helium

d)

krypton

107.

Why do electrons enter the 4s orbital before entering the 3d orbital? 

a)

because the 3d orbital is at a lower energy level

b)

because both the 4s and 3d orbitals are at the same energy level

c)

because the 4s orbital is at a lower energy level

d)

because the 4s orbital is at a higher energy level

108.

Why do you think are there different colors emitted?

a)

Because of the absorption of heat from the flame

b)

Because heat is released

c)

Because of the absorption of light

109.

What is the state when electrons move to a higher energy level upon absorption of energy?

a)

active

b)

inactive

c)

excited

d)

ground

110.

Which is the electron configuration of an aluminum atom (13Al) in the excited state?

a)

1s2 2s2 2p6 3s2 3p1

b)

1s2 2s2 2p6 3s2 3p2

c)

1s2 2s2 2p6 3s2 4s1

d)

1s2 2s2 2p6 3s2 3p3

111.

Light of a specific frequency is emitted when...

a)

an electron absorbs energy

b)

an electron moves down an energy level

c)

when an electron gets excited

d)

all of these are true

112.

Atoms only emit light of certain frequencies because...

a)

electrons move continuously

b)

electrons move up energy levels

c)

electrons can only have certain energies

d)

all of these are true

Similar Resources on Wayground

SCH3U Unit 1 Review

112 questions

SCH3U Unit 1 Review

quiz

Worksheet

•

11th Grade

Roe Chem Unit 1 Review

110 questions

Roe Chem Unit 1 Review

quiz

Worksheet

•

10th Grade

22-23 Midterm Review (ACP)

107 questions

22-23 Midterm Review (ACP)

quiz

Worksheet

•

11th Grade

CH05 Periodic Trends

116 questions

CH05 Periodic Trends

quiz

Worksheet

•

10th - 11th Grade

Semester 1 Final Review R

108 questions

Semester 1 Final Review R

quiz

Worksheet

•

10th Grade

Chemistry Final Review

117 questions

Chemistry Final Review

quiz

Worksheet

•

10th - 12th Grade

CU12: Forces Between Particles

116 questions

CU12: Forces Between Particles

quiz

Worksheet

•

9th Grade

Test #1 Review

113 questions

Test #1 Review

quiz

Worksheet

•

10th - 12th Grade