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Year 10 CHEMISTRY Revision

Total questions: 47

Worksheet time: 25mins

Name
Class
Date
1.

The chemical symbol for iron is:

a)

Ir

b)

Fe

c)

Cu

d)

I

2.

The chemical symbol for gold is:

a)

Gd

b)

Ag

c)

Au

d)

Cu

3.

Which of the statements below about the periodic table is true?

a)

All elements found in period 3 are metals

b)

The elements are arrange in increasing atomic number

c)

The elements in groups 17 and 18 are metals

d)

The elements are arranged in increasing atomic mass

4.

This substance is always only made up of one type of atom:

a)

Compound

b)

Element

c)

Mixture

d)

Molecule

5.

Element X has 8 protons, 9 neutrons and 8 electrons. From this data we can conclude that its:

a)

atomic number is 17

b)

mass number is 25

c)

atomic number is 8

d)

mass number is 16

6.

Which of the following would be a positive test for the gas H2?

a)

A squeaky pop is heard when the gas is lit

b)

The gas would turn lime water cloudy

c)

Litmus paper turns blue

d)

A yellow precipitate is formed in water

7.

Which of the following best describes the structure of the atom?

a)

a negatively charged nucleus of protons and neutrons orbited by electrons

b)

a negatively charged nucleus of electrons and neutrons orbited by protons

c)

a positively charged nucleus of protons and neutrons orbited by electrons

d)

a positively charged nucleus of electrons and neutrons orbited by protons

8.

If the two ions K+ and SO42- are combined, the formula of the resulting compound would be:

a)

KSO4

b)

K2SO­4

c)

K(SO4)2

d)

K4SO

9.

The name of the compound Na2CO3 is:

a)

Sodium carbontrioxide

b)

Nitrogen carbonate

c)

Nitrogen trioxide

d)

Sodium carbonate

10.

Important in the understanding of how electrons orbit the nucleus is that:

a)

Positive and negative charges attract one another

b)

Positive and negative charges repel one another

c)

Both positive and negative charges are attracted to particles with no charge

d)

Both positive and negative charges are repelled by particles with no charge

11.

What is the atomic number?

a)

16

b)

8

c)

0

12.

what is the atomic number?

a)

17

b)

35

c)

Cl

13.

What is the mass number?

a)

12

b)

24

c)

Mg

14.

What is the mass number?

a)

9

b)

4

c)

Be

15.

What element is this?

a)

Calcium

b)

Carbon

c)

Concrete

d)

Celinium

16.

How many electrons does this atom have?

a)

2

b)

4

c)

6

d)

8

17.

How many electrons does this element have?

a)

20

b)

10

c)

4

d)

2

18.

what would the electron configuration be for this element?

a)

2,6

b)

6,2

c)

2,4,2

d)

2,8

19.

What would the electron configuration be for this element?

a)

2,8,7

b)

2,6,8

c)

4,8,5

d)

7,8,2

20.

What would the electron configuration be for this element?

a)

2,2

b)

4

c)

1,1,1,1

d)

1,2,1

21.

What would the electron configuration be for this element?

a)

2,8,2

b)

8,2,2

c)

1,2,3,4

d)

2,6,7

22.

how many protons does this element have?

a)

8

b)

16

c)

0

d)

3

23.

how many protons does this element have?

a)

17

b)

35

c)

37

d)

0

24.

how many protons does this element have?

a)

4

b)

9

c)

5

d)

10

25.

how many protons does this element have?

a)

12

b)

24

c)

45

d)

10

26.

how many electrons does this neutral atom have?

a)

8

b)

16

c)

17

d)

7

27.

how many electrons does this neutral atom have?

a)

17

b)

35

c)

36

d)

16

28.

how many electrons does this neutral atom have?

a)

4

b)

9

c)

10

d)

5

29.

how many electrons does this neutral atom have?

a)

12

b)

24

c)

25

d)

10

30.

An element contains only one type of ________________, so it cannot be broken down into simpler substances

a)

Atom

b)

Valence

c)

Ion

d)

Electron configuration

31.

Atoms that lose or gain electrons to become charged are called _________.

a)

atoms

b)

elements

c)

ions

d)

valences

32.

Outer shell electrons are also called _________________ electrons.

a)

atoms

b)

electrons

c)

valence

d)

inner most

33.

The arrangement of electrons in the shells is called the __________________ ___________________.

a)

atomic number

b)

atomic mass

c)

electron configuration

d)

electron diagram

34.

The number of electrons in a neutral atom is the same as the ______________ ________________.

a)

atomic number

b)

atomic mass

35.

The octet rule state an atom is stable when the outer shell is _________, usually containing 8 electrons

a)

full

b)

empty

36.

Name the compound CuSO4:

a)

copper sulfate

b)

copper sulfide

c)

sodium oxide

d)

calcium carbonate

37.

Name the compound KNO3

a)

potassium nitrate

b)

potassium nitride

c)

nickel nitrate

d)

nickel iodide

38.

Name the compound MgO

a)

magnesium oxide

b)

magnesium hydroxide

c)

mercury chloride

d)

mercury oxide

39.

Name the compound Ca(OH)2

a)

calcium hydroxide

b)

calcium dihydride

c)

carbon monoxide

d)

carbon hydroxide

40.

what is the formula for Carbon dioxide

a)

CO2

b)

CO3

c)

C1O2

d)

C1O1

41.

What is the formula for water

a)

H2O

b)

H1O

c)

H1O3

d)

C1O1

42.

What is the formula for potassium carbonate

a)

K2CO3

b)

K3CO3

c)

K3CO2

d)

K3C(O)2

43.

What is the formula for calcium nitrate

a)

Ca(NO3)2

b)

Ca(NO3)1

c)

Ca(NO)2

d)

CaNO32

44.
Which side of a chemical equation is the product side?
a)
Left (before the yields sign)
b)
Right (after the yields sign)
45.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
46.
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
a)
the product is doubled
b)
the product is half the mass of the reactants
c)
the mass is the same
d)
the mass changes depending on the reaction
47.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 

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