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Chemistry AQA Topic 1a

Total questions: 58

Worksheet time: 29mins

Name
Class
Date
1.
What is the relative mass of a neutron?
a)
1
b)
-1
c)
0
d)
1/2000
2.
What is the relative mass of an electron?
a)
1/2000
b)
1/200
c)
0
d)
-1
3.

How many atoms are there in a molecule of ethanol (C2H6O)

a)

9

b)

6

c)

2

d)

8

4.
What is the definition of an element?
a)
A substance made up of only one type of atom
b)
A substance made up of only one atom
c)
Two or more different atoms chemically bonded
d)
Two or more different substances not chemicall combined
5.

What is the relative atomic mass of lithium?

a)

7

b)

2

c)

4

d)

14

6.

What type of substance is shown here?

a)

Mixture of elements

b)

Pure element

c)

Pure compound

d)

Mixture of compounds

7.

What type of structure is shown here?

a)

Giant Lattice

b)

Atom

c)

Molecule

8.
What best describes this diagram?
a)

Molecules of an element

b)

Atoms of an element

c)
Molecules of a compound
d)
Ions of an element
9.
What best describes this diagram?
a)
Molecules of a compound
b)
Molecules of an element
c)
Atoms of an element
d)
A lattice of a compound
10.
To the nearest hundred, how many elements are there on the periodic table?
a)
100
b)
200
c)
300
d)
400
11.
What word best describes ammonia, NH3
a)
Compound
b)
Metal
c)
Element
d)
Mixture
12.
What is the radius of an atom in nm?
a)

0.1 nm

b)
1.0 nm
c)
0.00001 nm
d)
0.001 nm
13.
Which description best describes an isotope?
a)
Same number of protons, different number of neutrons
b)
Same number of protons, different number of electrons
c)
Same number of neutrons, different number of protons
d)
Same number of electrons, different number of neutrons
14.
Which of the following is a property of a mixture?
a)

Can be separated easily

b)
Have definite melting points
c)
Cannot be separated easily
d)
Have a fixed composition
15.

How many Carbon atoms are there in a molecule of methane, CH4

a)

5

b)

4

c)

1

d)

3

16.
How many times heavier is a proton in comparison to a neutron?
a)
They are the same
b)
2
c)
2000
d)
4
17.
What phrase would best describe the formula CO2
a)
Molecule of carbon dioxide (compound)
b)
Molecule of carbon dioxide (element)
c)
Atom of carbon dioxide (compound)
d)
Lattice of carbon dioxide (compound)
18.

What is the atomic number of helium?

a)

1

b)

2

c)

3

d)

4

19.

How many protons does an atom of titanium have?

a)

22

b)

48

c)

26

d)

70

20.

How many neutrons does an atom of titanium have?

a)

26

b)

48

c)

22

d)

70

21.

How many electrons does an atom of boron have?

a)

5

b)

11

c)

6

d)

don't know

22.

How many neutrons does an atom of hydrogen have?

a)

0

b)

1

c)

2

23.

What is the relative atomic mass of potassium?

a)

39

b)

19

c)

20

24.

What fraction of the radius of an atom is the nucleus?

a)

1/10000

b)

1/1000

c)

1/100000

d)

1/10

25.

What is the approximate radius of an atom in metres?

a)

1 x 10-10

b)

1 x 10-9

c)

1 x 109

d)

1 x 1010

26.

What is the relative charge of a neutron?

a)

0

b)

+1

c)

-1

d)

1/2000

27.

What is the relative charge of a proton

a)

+1

b)

0

c)

-1

d)

1/2000

28.

What is the relative charge of an electron?

a)

-1

b)

+1

c)

0

d)

1/2000

29.

Why are atoms neutral?

a)

They have the same number of protons and electrons

b)

They have the same number of neutrons and electrons

c)

They have the same number of protons and neutrons

30.

What property determines the element that an atom is?

a)

number of protons

b)

number of neutrons

c)

number of electrons

d)

mass number

31.

Which separation technique would best separate sand from water

a)

filtration

b)

evaporation

c)

distillation

d)

chromatography

32.

Which separation technique would best separate salt from salt water solution

a)

crystallisation

b)

filtration

c)

distillation

d)

chromatography

33.

Which technique would be best to separate crude oil (a mixture of many liquids)

a)

Fractional distillation

b)

simple distillation

c)

filtration

d)

crystallisation

34.

Which separation technique is shown in the picture?

a)

Fractional distillation

b)

Simple distillation

c)

Filtration

d)

Crystallisation

35.

Which separation technique is shown in the picture?

a)

chromatography

b)

filtration

c)

simple distillation

d)

fractional distillation

36.

Which scientist discovered the electron?

a)

Thompson

b)

Rutherford

c)

Bohr

d)

Chadwick (Chadders to his mates)

37.

Which scientist discovered the nucleus?

a)

Thompson

b)

Rutherford

c)

Bohr

d)

Chadwick (Chadders to his mates)

38.

Which scientist discovered the neutrons?

a)

Thompson

b)

Rutherford

c)

Bohr

d)

Chadwick (Chadders to his mates)

39.

Which scientist proposed that electrons orbited the nucleus at fixed distances?

a)

Thompson

b)

Rutherford

c)

Bohr

d)

Chadwick (Chadders to his mates)

40.

Which is the best definition of the plumb pudding model?

a)

Ball of positive charge with negative electrons randomly embedded

b)

Ball of negative charge with positive electrons randomly embedded

c)

Concentrated mass of positive charge surrounded by negative electrons

d)

Concentrated mass of negative charge surrounded by positive electrons

41.

How many electrons are in the second shell of a carbon atom?

a)

4

b)

2

c)

6

d)

12

42.

What is the electron configuration of a calcium atom?

a)

2.8.8.2

b)

2.8.10

c)

20

d)

2.8.8.1

43.

What is the electronic configuration of a lithium atom?

a)

2.1

b)

3

c)

1.2

d)

2.5

44.

What is the electron configuration of a magnesium atom?

a)

2.8.2

b)

2.8.8.2

c)

12

d)

24

45.

How many electrons does an oxygen atom have in its outermost shell?

a)

2

b)

6

c)

8

d)

16

46.

How many electrons does an aluminium atom have in its second shell?

a)

8

b)

10

c)

3

d)

2

47.

What do all elements in group 1 have in common?

a)

They all have 1 electron in their outer shell

b)

They all have the same number of electrons

c)

They all have the same number of neutrons

d)

They all have the same number of filled electron shells

48.

What does the larger number for an element show you on the periodic table

a)

relative atomic mass

b)

mass number

c)

atomic number

49.

Isotopes of the same element have different chemical properties

a)

true

b)

false

50.

The number of electrons in the outer shell is the same as the elements...

a)

group number

b)

atomic number

c)

relative atomic mass

d)

period number

51.
Which property would this giant ionic compound have?
a)
Conducts electricity
b)
Low boiling point
c)
High melting point
d)
Is a gas
52.
Ionic bonds happen between
a)
Metal atoms and metal atoms
b)
Metal atoms and non-metal atoms
c)
Non-metal atoms and non-metal atoms
53.

How are ionic bonds formed?

a)

When atoms share an electron

b)

Transfer of electrons to form oppositely charged ions

c)

When one atom takes a proton

d)

When one atom takes a neutron

54.
How are ionic bonds formed?
a)
When atoms share an electron
b)
When opposite charged atoms attract
c)
When one atom takes a proton
d)
When one atom takes a neutron
55.
An element forms an ion with a 2- charge. This means that 2 electrons were __________.
a)
Gained
b)
Lost
c)
Shared
d)
Destroyed
56.

What type of bonding is in sodium oxide

a)

Ionic

b)

Covalent

c)

Metallic

57.

When do ionic compounds conduct electricity?

a)

molten and aqueous

b)

solid

c)

molten

d)

aqueous

58.

Why does sodium chloride have a high melting point?

a)

Strong electrostatic attraction between positive ions and delocalised electrons

b)

Strong electrostatic attractions between oppositely charged ions

c)

Strong intermolecular forces

d)

Strong electrostatic attraction between atoms

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