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Grade 10 Chemistry Final 2025

Total questions: 126

Worksheet time: 1hrs 16mins

Name
Class
Date
1.

When rain freezes and turns to ice or sleet, this is an example of a

a)

physical property

b)

chemical property

c)

physical change

d)

chemical change

2.

Two substances are combined. Gas is released, and a tall, black column forms. This is an example of a

a)

physical property

b)

chemical property

c)

physical change

d)

chemical change

3.

Which answer below is an example of two physical properties of matter?

a)

weight and toxicity

b)

mass and reactivity

c)

mass and volume

d)

mass and pH

4.

When two substances are combined, a milky substance forms and falls to the bottom of the flask. What would be the most likely reason this happened?

a)

One of the substances dissolved.

b)

The substances chemically reacted with one another.

c)

Some of the liquid evaporated.

d)

One of the substances crystallized.

5.

Conductivity is an example of a/an

a)

chemical property

b)

intensive property

c)

extensive property

d)

dependent property

6.

To compress means to be squeezed or pressed together. Why is a gas easily compressible, but solids are not?

a)

Gas particles are much smaller.

b)

Particles in a solid are not strongly attracted to one another.

c)

Molecules in a solid are much larger.

d)

Particles in a gas are much farther apart compared to a solid.

7.

Which state of matter has an indefinite shape and a definite volume?

a)

liquid

b)

solid

c)

gas

d)

plasma

8.

Which state of matter has an indefinite shape and an indefinite volume?

a)

liquid

b)

solid

c)

gas

d)

plasma

9.

Which state of matter has a definite shape and a definite volume?

a)

liquid

b)

solid

c)

gas

d)

plasma

10.

A mixture

a)

is made of a single substance.

b)

is made of more than one substance.

c)

always has a fixed composition.

d)

is made of substances that you can always see at all times.

11.

Students were studying different liquid samples. Which of these is most likely a pure substance?

a)

Liquid A was heated and evaporated completely. Nothing was left behind in the beaker.

b)

An acid was mixed with Liquid B, and bubbles formed.

c)

Once Liquid C cooled, a precipitate formed.

d)

The density of Liquid D is 2.3 g/mL.

12.

If a salad dressing with water and vinegar looks the SAME throughout (has a consistent color and texture), it would be an example of a

a)

heterogeneous mixture

b)

pure substance

c)

compound

d)

homogeneous mixture

13.

What happens when you mix water and NaCl?

a)

NaCl is salt. It will dissolve in water.

b)

NaCl is salt, and it will all just sink to the bottom of the container.

c)

NaCl is salt, and it will all float on top of the water.

d)

We have no way of knowing what NaCl is.

14.

When salt dissolves in water, it is an example of a

a)

heterogeneous mixture

b)

chemical reaction

c)

homogeneous mixture

d)

chemical change

15.

TRUE or FALSE: A salt water solution will look the same throughout.

a)

True

b)

False

16.

Mixtures are

a)

physically combined and can usually be separated.

b)

physically combined and can never be separated.

c)

chemically combined.

d)

We have no way of knowing how they combine.

17.

A salt water solution can be separated by

a)

filtration

b)

a sieve

c)

a centrifuge

d)

evaporation

18.

In the periodic table, groups are displayed

a)

Horizontally

b)

Vertically

c)

Diagonally

d)

Collated

19.

In the periodic table, periods are arranged

a)

Horizontally

b)

Vertically

c)

Diagonally

d)

Collated

20.

The sub-atomic particle which is negatively charged

a)

Electron

b)

Neutron

c)

Proton

d)

Nebula

21.

The subatomic particle which has no charge

a)

Electron

b)

Neutron

c)

Proton

d)

Nebula

22.

The sub-atomic particle which is positively charged

a)

Electron

b)

Neutron

c)

Proton

d)

Nebula

23.

The periodic table is arranged by

a)

Atomic radius

b)

Atomic number

c)

Alphabetically

d)

Atomic mass

24.

Which group is the LEAST reactive?

a)

Halogens

b)

Alkaline Metals

c)

Nobel Gasses

d)

Transition Metals

25.

What is the maximum number of electrons in the 1st shell?

a)

1

b)

2

c)

4

d)

8

26.

Which is the correct max number of electrons for the first 3 shells

a)

2, 8, 16

b)

1, 2, 4

c)

2, 8, 8

d)

8, 8, 8

27.

The atomic mass =

a)

Neutron + Electron

b)

Proton + Electron

c)

Proton + Neutron

d)

Electrons only

28.

What is the symbol for iron?

a)

I

b)

Ir

c)

Fr

d)

Fe

29.

Au represents which electron?

a)

Silver

b)

Gold

c)

Aluminium

d)

Argon

30.

B is the symbol for

a)

Boron

b)

Beryllium

c)

Barium

d)

Bromide

31.

Which is the correct symbol for Helium?

a)

H

b)

Hm

c)

Gr

d)

He

32.

Which element is found in period 1 group 1

a)

Potassium

b)

Oxygen

c)

Hydrogen

d)

Helium

33.

In the periodic table, groups are displayed

a)

Horizontally

b)

Vertically

c)

Diagonally

d)

Collated

34.

In the periodic table, periods are arranged

a)

Horizontally

b)

Vertically

c)

Diagonally

d)

Collated

35.

The sub-atomic particle which is negatively charged

a)

Electron

b)

Neutron

c)

Proton

d)

Nebula

36.

The subatomic particle which has no charge

a)

Electron

b)

Neutron

c)

Proton

d)

Nebula

37.

The sub-atomic particle which is positively charged

a)

Electron

b)

Neutron

c)

Proton

d)

Nebula

38.

The periodic table is arranged by

a)

Atomic radius

b)

Atomic number

c)

Alphabetically

d)

Atomic mass

39.

Which group is the LEAST reactive?

a)

Halogens

b)

Alkaline Metals

c)

Nobel Gasses

d)

Transition Metals

40.

What is the maximum number of electrons in the 1st shell?

a)

1

b)

2

c)

4

d)

8

41.

Which is the correct max number of electrons for the first 3 shells

a)

2, 8, 16

b)

1, 2, 4

c)

2, 8, 8

d)

8, 8, 8

42.

The atomic mass =

a)

Neutron + Electron

b)

Proton + Electron

c)

Proton + Neutron

d)

Electrons only

43.

What is the symbol for iron?

a)

I

b)

Ir

c)

Fr

d)

Fe

44.

Au represents which electron?

a)

Silver

b)

Gold

c)

Aluminium

d)

Argon

45.

B is the symbol for

a)

Boron

b)

Beryllium

c)

Barium

d)

Bromide

46.

Which is the correct symbol for Helium?

a)

H

b)

Hm

c)

Gr

d)

He

47.

Which element is found in period 1 group 1

a)

Potassium

b)

Oxygen

c)

Hydrogen

d)

Helium

48.

The order of elements in the periodic table is based on

a)

the number of protons in the nucleus.

b)

the electric charge of the nucleus.

c)

the number of neutrons in the nucleus.

d)

atomic mass.

49.

Atoms of elements that are in the same group have the same number of

a)

protons.

b)

neutrons.

c)

valence electrons.

d)

protons and neutrons.

50.

Which of the following elements is an alkali metal?

a)

calcium

b)

magnesium

c)

mercury

d)

sodium

51.

In Mendeleev's periodic table, elements in each column had similar

a)

atomic masses.

b)

properties.

c)

atomic numbers.

d)

symbols.

52.

How was Mendeleev's periodic table arranged?

a)

by increasing atomic mass

b)

by decreasing atomic mass

c)

by increasing atomic number

d)

by decreasing atomic number

53.

Mendeleev left gaps in his periodic table because

a)

the table was too small.

b)

protons belonged there.

c)

the table was too full.

d)

no known elements fit there.

54.

Each column of the periodic table is

a)

an element.

b)

a group.

c)

an isotope.

d)

a period.

55.

The three main groups of elements are metals, nonmetals, and

a)

inert gases.

b)

alkali metals.

c)

radioactive isotopes.

d)

semiconductors/metalloids.

56.

Most elements are

a)

metals.

b)

nonmetals.

c)

metalloids.

d)

semiconductors.

57.

Elements in an elemental family have similar

a)

atomic symbols.

b)

atomic sizes.

c)

atomic weights.

d)

chemical properties.

58.

The order of elements in the modern periodic table is based on an element's

a)

atomic number.

b)

name.

c)

chemical symbol.

d)

atomic mass.

59.

Which statement about the alkali metals is correct?

a)

They are located in the left-most column of the periodic table.

b)

They are extremely nonreactive.

c)

They are usually gases.

d)

They form negative ions with a 1- charge.

60.

Metals tend to be

a)

gases.

b)

dull.

c)

brittle.

d)

good conductors.

61.

Which group is very stable due to the fact that they have a full outermost energy level?

a)

alkali metals

b)

halogens

c)

alkaline-earth metals

d)

noble gases

62.

Which of the following is a property of group 18 elements?

a)

malleable

b)

brittleness

c)

high electrical conductivity

d)

unlikely to react with other elements

63.

Based on its location on the periodic table, which of these elements most likely has physical and chemical properties most similar to boron (B)?

a)

magnesium (Mg)

b)

aluminum (Al)

c)

neon (Ne)

d)

chlorine (Cl)

64.

Which of the following groups on the Periodic Table is likely to form positively charged ions (or cations)?

a)

group 1

b)

group 13

c)

group 17

d)

group 18

65.

Which of the following elements would most likely be a shiny, gray-colored solid at room temperature, conduct electricity, and dent when hit with a hammer?

a)

argon (Ar)

b)

chlorine (Cl)

c)

sulfur (S)

d)

aluminum (Al)

66.

Alkali metals are extremely reactive because they

a)

have every small atomic masses.

b)

are not solid at room temperature.

c)

have one valence electron that is easily removed to form a positive ion.

d)

have two valence electrons that form compounds with calcium and magnesium.

67.

The order of elements in the periodic table is based on

a)

the number of protons in the nucleus.

b)

the electric charge of the nucleus.

c)

the number of neutrons in the nucleus.

d)

atomic mass.

68.

Which of the following elements is an alkali metal?

a)

calcium

b)

magnesium

c)

mercury

d)

sodium

69.

In Mendeleev's periodic table, elements in each column had similar

a)

atomic masses.

b)

properties.

c)

atomic numbers.

d)

symbols.

70.

How was Mendeleev's periodic table arranged?

a)

by increasing atomic mass

b)

by decreasing atomic mass

c)

by increasing atomic number

d)

by decreasing atomic number

71.

Mendeleev left gaps in his periodic table because

a)

the table was too small.

b)

protons belonged there.

c)

the table was too full.

d)

no known elements fit there.

72.

Each column of the periodic table is

a)

an element.

b)

a group.

c)

an isotope.

d)

a period.

73.

Most elements are

a)

metals.

b)

nonmetals.

c)

metalloids.

d)

semiconductors.

74.

Which statement about the alkali metals is correct?

a)

They are located in the left-most column of the periodic table.

b)

They are extremely nonreactive.

c)

They are usually gases.

d)

They form negative ions with a 1- charge.

75.

Metals tend to be

a)

gases.

b)

dull.

c)

brittle.

d)

good conductors.

76.

Which group is very stable due to the fact that they have a full outermost energy level?

a)

alkali metals

b)

halogens

c)

alkaline-earth metals

d)

noble gases

77.

atomic number

a)

gas at room temperature, low boiling point

b)

a subatomic particle that has a negative charge

c)

number or protons and neutrons

d)

the number of protons in the nucleus of an atom

78.
A ___________ is an arrangement of elements in columns
a)
columns
b)
rows
c)
periodic table
d)
electron shell
79.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
80.
Which element is not a metal?
a)
H
b)
Re
c)
Al
d)
B
81.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
82.
Which is an alkali metal?
a)
Magnesium
b)
Iron
c)
Sodium
d)
Europium
83.
A horizontal row of elements in the periodic table.
a)
column
b)
group
c)
period
84.
A vertical column in the periodic table.  Elements share similar properties.
a)
row
b)
group
c)
period
85.
A proton is....
a)
A negatively charged subatomic particle
b)
A positively charged subatomic particle
c)
A neutrally charged subatomic particle
d)
The only subatomic particle located in the nucleus
86.
A neutron has a charge of
a)
+2
b)
No charge
c)
-1
d)
+1
87.

The order of elements in the periodic table is based on

a)

the number of protons in the nucleus.

b)

the electric charge of the nucleus.

c)

the number of neutrons in the nucleus.

d)

atomic mass.

88.

Which of the following elements is an alkali metal?

a)

calcium

b)

magnesium

c)

mercury

d)

sodium

89.

In Mendeleev's periodic table, elements in each column had similar

a)

atomic masses.

b)

properties.

c)

atomic numbers.

d)

symbols.

90.

How was Mendeleev's periodic table arranged?

a)

by increasing atomic mass

b)

by decreasing atomic mass

c)

by increasing atomic number

d)

by decreasing atomic number

91.

Mendeleev left gaps in his periodic table because

a)

the table was too small.

b)

protons belonged there.

c)

the table was too full.

d)

no known elements fit there.

92.

Each column of the periodic table is

a)

an element.

b)

a group.

c)

an isotope.

d)

a period.

93.

Most elements are

a)

metals.

b)

nonmetals.

c)

metalloids.

d)

semiconductors.

94.

Which statement about the alkali metals is correct?

a)

They are located in the left-most column of the periodic table.

b)

They are extremely nonreactive.

c)

They are usually gases.

d)

They form negative ions with a 1- charge.

95.

Metals tend to be

a)

gases.

b)

dull.

c)

brittle.

d)

good conductors.

96.

Which group is very stable due to the fact that they have a full outermost energy level?

a)

alkali metals

b)

halogens

c)

alkaline-earth metals

d)

noble gases

97.

atomic number

a)

gas at room temperature, low boiling point

b)

a subatomic particle that has a negative charge

c)

number or protons and neutrons

d)

the number of protons in the nucleus of an atom

98.
A ___________ is an arrangement of elements in columns
a)
columns
b)
rows
c)
periodic table
d)
electron shell
99.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
100.
Which element is not a metal?
a)
H
b)
Re
c)
Al
d)
B
101.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
102.
Which is an alkali metal?
a)
Magnesium
b)
Iron
c)
Sodium
d)
Europium
103.
A horizontal row of elements in the periodic table.
a)
column
b)
group
c)
period
104.
A vertical column in the periodic table.  Elements share similar properties.
a)
row
b)
group
c)
period
105.
A proton is....
a)
A negatively charged subatomic particle
b)
A positively charged subatomic particle
c)
A neutrally charged subatomic particle
d)
The only subatomic particle located in the nucleus
106.
A neutron has a charge of
a)
+2
b)
No charge
c)
-1
d)
+1
107.
FIND THE ELECTRONIC CONFIGURATION OF Cl (At no = 17)
a)
2,8,7
b)
2,8,8
c)
2,8,6
d)
2,8
108.
Ar (18)
a)
2,8,7
b)
2,8,8
c)
2,8,6
d)
2,8,5
109.
C (6)
a)
2,5
b)
2,6
c)
2,4
d)
2,7
110.
O (8)
a)
2,2
b)
2,8,8
c)
2,8
d)
2,6
111.
Mg (12)
a)
2,8,2
b)
2,8,6
c)
2,6
d)
2,7
112.
N (7)
a)
2,2
b)
2,3
c)
2,4
d)
2,5
113.
F (9)
a)
2,5
b)
2,6
c)
2,7
d)
2,8
114.
What is the symbol for atomic number
a)
A
b)
Z
c)
B
d)
N
115.
Write the symbol for Chlorine
a)
Cl
b)
C
c)
Co
d)
Cr
116.
Which is the first element in periodic table
a)
Hydrogen
b)
Chloriine
c)
Helium
d)
Boron
117.

Chemists can identify the composition of some unknown salts by conducting a flame test. When potassium salts are heated in a flame, a purple color is observed.


This is due to the movement of electrons between energy levels. What is the electron configuration of a potassium atom at ground state?

a)

1s2; 2s2; 2p6; 3s2; 3p6; 4d1

b)

1s2; 2s2; 2p6; 3s2;3p6; 3d1

c)

1s2; 2s2; 2d6; 3s2; 3d6; 4s1

d)

1s2; 2s2; 2p6; 3s2; 3p6; 4s1

118.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
119.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
120.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
121.
An orbital can at most hold how many electrons?
a)
1 electron
b)
2 electrons
c)
3 electrons
d)
4 electrons
122.
The electron configuration of an atom is 1s22s22p6.  The number of valence electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
123.
What is the electron configuration for this atom?
a)
1s22s22p6
b)
1s22s22p5
c)
1s22s22p3
d)
2s22p3
124.

Which element has 2,8,8 electrons per shell?

a)

Lead

b)

Fluorine

c)

Neon

d)

Argon

125.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
126.
How many valence electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4

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