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WorksheetsC2 - Year 7 - Elements, Atoms and Compounds
Total questions: 40
Worksheet time: 15mins
Name
Class
Date
1.
Define an element.
a)
A substance that cannot be broken down to other substances
b)
A group of two or more atoms chemically bonded together
c)
The smallest part of a substance that can exist
d)
Hydrogen
2.
Where would you find all the elements?
a)
Periodic Table
b)
Your exercise book
c)
In a science lab
d)
On your bedroom wall
3.
What is an atom?
a)
The smallest part of an element that can exist
b)
A substance made up of more than one other substance
c)
A substance which has not been made up of any others
d)
The things which appear on the periodic table
4.
When conducting an oxidation reaction, you would want to you ______ to burn your fuel.
a)
Oxygen
b)
Hydrogen
c)
Helium
d)
Carbon
5.
Which is NOT an element?
Note: These have not all been authenticated but do appear on the table.
Note: These have not all been authenticated but do appear on the table.
a)
Untromium
b)
Ununpentium
c)
Ununseptium
d)
Ununoctium
6.
Which of the following elements would you probably want to use for advertising signs?
a)
Neon
b)
Iron
c)
Praseodymium
d)
Lithium
7.
What is the 26th element?
a)
Iron
b)
Sulfur
c)
Maganese
8.
Which is a noble gas? Noble gasses can be found on the 18th group.
a)
Krypton
b)
Chromium
c)
Gold
d)
Hydrogen
9.
Sb
a)
Antimony
b)
Silver-brick
c)
Potassium
d)
Tellurium
10.
Rh
a)
Rhodium
b)
Ruthenium
c)
Rutherfordium
d)
Radon
11.
Cs
a)
Caesium
b)
Coppernucium
c)
Chromium
d)
Calcium
12.
Lead
a)
Pb
b)
Le
c)
L
d)
Fu
13.
Tungsten
a)
W
b)
Tu
c)
T
d)
p
14.
Potassium
a)
K
b)
P
c)
Po
d)
V
15.
What are the ? in this table? Answer in the correct order.
a)
Yes, No
b)
Yes, Yes
c)
No, Yes
d)
No, No
16.
Using the table, which would you want to use as electricity cables?
a)
Iron
b)
Sulfur
c)
Iron Sulfide
17.
Name the element.
a)
Carbon
b)
Boron
c)
Nitrogen
d)
Beryllium
18.
How many protons and neutrons would be in the nucleus of a Flourine atom?
a)
29
b)
38
c)
19
d)
10
19.
'Mass number - Atomic number' is the way of working out how many _____ there is in an atom.
a)
Neutrons
b)
Electrons
c)
Protons
d)
Shells
20.
There are 111 neutrons in which element?
a)
Rhenium
b)
Rogentgenium
c)
Cadmium
d)
Sodium
21.
What is this?
a)
A compound
b)
Water
c)
An atom
d)
An element
22.
Which of these statements is true?
a)
An element and compound are different - a compound is made up of more than one atom.
b)
An element is the same as a compound, but just in a different form.
c)
An element is bigger than a compound
d)
An element and a compound are different - Two or more compounds make an element.
23.
Which is true about a compound.
a)
A compound is two or more elements chemically bonded together.
b)
A compound is two or more elements mixed together.
c)
A compound is another way of saying 'two or more elements'
d)
A compound is part of a chemical reaction.
24.
Which is a compound?
a)
1 (farthest left)
b)
2 (middle)
c)
3 (farthest right)
25.
What does this picture show?
a)
Mixture of elements and compounds
b)
Mixture of compounds
c)
Elements
d)
Compounds
26.
Which is not a compound?
a)
Praseodymium
b)
Iron Sulfide
c)
Potassium Iodide
d)
Calcium Carbonate
27.
Which is not a component of Potassium Iodate?
a)
Carbon
b)
Oxygen
c)
Potassium
d)
Iodine
28.
Carbon dioxide is made up of...
a)
Carbon + Oxygen
b)
Carbon + Scandium + Oxygen
c)
Scandium-Carbon - Scandium X Oxygen
d)
Carbon Monoxide - Oxygen
29.
Glucose =
a)
Carbon + Hydrogen + Oxygen
b)
Potassium + Oxygen + Hydrogen
c)
Calcium + Osmium + Hydrogen
d)
Helium + Oxygen + Cobalt
30.
What element does not appear in Carbonic Acid?
a)
Calcium
b)
Hydrogen
c)
Carbon
d)
Oxygen
31.
Which of these is a way in which a compound can be formed from elements?
a)
Burning
b)
Melting
c)
Freezing
d)
Condensing
32.
A compound has different properties to the elements within it.
a)
True
b)
False
33.
I have 45g of Sulfur and __g of Iodine and so make 96g of Potassium Iodide.
a)
51
b)
45
c)
46
d)
55
34.
C6H12O6 consists of how many elements?
a)
3
b)
24
c)
6
d)
12
35.
Hydrogen + Oxygen
a)
Hydrogen Oxide
b)
Oxygen Hydrate
c)
Water
d)
Hydroxide
36.
What is the common reference to the formula H2O?
a)
Water
b)
Chlorine
c)
Squash
d)
Hydroxide
37.
4Sc + 3O2 → 2Sc2O3 is the word equation for:
a)
Scandium + Dioxide → Scandium Ozone
b)
Scandium + Oxygen → Scandium Oxide
c)
4 Scandium + 3 Dioxide → 2 Scandium Ozone
d)
4 Scandium + 3 Oxygen → 2 Scandium Oxygen
38.
OsO4 is the chemical symbol equation of:
a)
Osmium Oxide
b)
Oxygen Osmide
c)
Osmium Dioxide
d)
Phosphorous Oxide
39.
How much of glucose is Hydrogen?
a)
50%
b)
25%
c)
16.66% recurring
d)
75%
40.
4Cu + O2 → 2Cu2O. How much of copper monoxide is copper?
a)
66.66% recurring
b)
50%
c)
33.33% recurring
d)
100%, it is just an element
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