WorksheetsKS3 Chemistry
Total questions: 44
Worksheet time: 23mins
Name
Class
Date
1.
How many atoms of oxygen are there in water? H2O
a)
1
b)
2
c)
0
2.
How many atoms of sulphur are in sulphuric acid? H2SO4
a)
6
b)
2
c)
4
d)
1
3.
How many atoms are there all together in HCl?
a)
1
b)
2
c)
3
4.
What are the different elements in carbon dioxide?
a)
carbon
b)
cobalt and oxygen
c)
oxygen and carbon
d)
oxide and carbon
5.
How many atoms are there all together in Magnesium hydroxide? Mg(OH)2
a)
3
b)
5
c)
2
6.
How many different elements make up nitric acid? HNO3
a)
1
b)
5
c)
3
7.
What elements make up Copper sulphate? CuSO4
a)
copper, sulphate
b)
copper, sulphur
c)
copper, sulphur and oxygen
d)
copper and oxygen
8.
How many atoms in total are there in nitric acid? HNO3
a)
3
b)
6
c)
5
9.
Acid + Metal --> ?
a)
Salt + Water
b)
Salt + Hydrogen
c)
Salt
d)
Hydrogen
10.
Iron + Hydrochloric acid --> ?
a)
iron sulfate + water
b)
iron + hydrogen
c)
iron chloride + hydrogen
d)
iron chloride + water
11.
Magnesium + sulphuric acid --> ?
a)
magnesium sulfate + water
b)
magnesium sulfate + hydrogen
c)
magnesium chloride + hydrogen
d)
magnesium chloride + water
12.
Magnesium + sulphuric acid --> ?
a)
magnesium sulfate + water
b)
magnesium sulfate + hydrogen
c)
magnesium chloride + hydrogen
d)
magnesium chloride + water
13.
Zinc + nitric acid --> ?
a)
zinc sulfate + water
b)
zinc sulfate + hydrogen
c)
zinc nitrate + hydrogen
d)
zinc chloride + water
14.
Which gas gives out a 'squeaky pop' when a lit splint is placed in it?
a)
hydrogen
b)
oxygen
c)
carbon dioxide
d)
nitrogen
15.
Which metal is the least reactive out of: copper, magnesium, zinc and iron?
a)
copper
b)
magnesium
c)
zinc
d)
iron
16.
Which metal is the most reactive out of: copper, magnesium, zinc and iron?
a)
copper
b)
magnesium
c)
zinc
d)
iron
17.
Which equation correctly shows the reaction of zinc with oxygen?
a)
Zn + O --> ZnO
b)
Zn + O2 --> ZnO
c)
2Zn + O2 --> 2ZnO
d)
Zn + O2 --> 2ZnO
18.
A change in which atoms are rearranged to create new substances.
New are made substances made.
Energy transferred to or from surroundings.
New are made substances made.
Energy transferred to or from surroundings.
a)
Physical change
b)
Catalysts
c)
Reversible
d)
Chemical reaction
19.
Not used up in a reaction.
Speeds up a slow reaction.
Speeds up a slow reaction.
a)
Physical change
b)
Catalysts
c)
Reversible
d)
Chemical reaction
20.
A change that is reversible.
New substances are not made.
New substances are not made.
a)
Physical change
b)
Catalysts
c)
Reversible
d)
Chemical reaction
21.
A starting substance in a chemical reaction.
Must be kept to the LEFT of the arrow.
Must be kept to the LEFT of the arrow.
a)
Products
b)
Produts
c)
Reactants
d)
Reatants
22.
"ate" at the end of a compound tells you that which element is present?
a)
Oxygen
b)
Hydrogen
c)
Water
d)
Carbon
23.
Transfers energy from the surroundings.
Temperature of the reaction decreases (feels cooler)
Temperature of the reaction decreases (feels cooler)
a)
Endothermic change
b)
Exothermic change
24.
The vertical (up and down) columns in the Periodic Table are called
a)
groups
b)
towers
c)
periods
d)
atomic numbers
25.
The Modern Periodic Table of Elements is arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
26.
What does the atomic mass tell you?
a)
Basically,the number of electrons and protons
b)
The number of neutrons
c)
Basically, the number of protons and neutrons
d)
The number of protons.
27.
These are found on the Periodic Table.
a)
Compounds
b)
Elements
c)
Mixtures
28.
The atomic number of an element tells the number of _____ in the nucleus of an atom of that element.
a)
protons
b)
neutrons
c)
electrons
d)
isotopes
29.
Most of the mass of an atom is found it its _____.
a)
electron cloud
b)
nucleus
c)
atomic number
d)
empty space
30.
An element is made up of only one kind of _____.
a)
isotope
b)
plastic
c)
atom
d)
metal
31.
Salts that are made with hydrochloric acid are called ______________.
a)
chlorides
b)
sulfates
c)
nitrates
d)
carbonates
32.
Salts that are made with sulfuric acid are called ______________.
a)
chlorides
b)
sulfates
c)
nitrates
d)
carbonates
33.
Salts that are made with nitric acid are called ______________.
a)
chlorides
b)
sulfates
c)
nitrates
d)
carbonates
34.
Salts that are made with carbonic acid are called ______________.
a)
chlorides
b)
sulfates
c)
nitrates
d)
carbonates
35.
acid + metal ----->
a)
salt + hydrogen
b)
salt + water + carbon dioxide
c)
salt + water
d)
salt + carbon dioxide
36.
acid + carbonate ----->
a)
salt + hydrogen
b)
salt + water + carbon dioxide
c)
salt + water
d)
salt + carbon dioxide
37.
What reactants are needed to prepare (make) copper carbonate?
a)
copper and hydrochloric acid
b)
copper and sulfuric acid
c)
copper and nitric acid
d)
copper and carbonic acid
38.
What reactants are needed to prepare (make) magnesium nitrate?
a)
magnesium and hydrochloric acid
b)
magnesium and sulfuric acid
c)
magnesium and nitric acid
d)
magnesium and carbonic acid
39.
What reactants are needed to prepare (make) lead sulfate?
a)
lead and hydrochloric acid
b)
lead and sulfuric acid
c)
lead and nitric acid
d)
lead and carbonic acid
40.
How do you know when a reaction between a metal and an acid is complete?
a)
All the metal is dissolved
b)
There is a colour change in the acid
c)
Bubbles don't form any more when more metal is added
d)
All the acid evaporates
41.
In a reaction between an acid and a metal gas bubbles will appear. What is that gas?
a)
oxygen
b)
hydrogen
c)
helium
d)
carbon dioxide
42.
In a reaction between an acid and a carbonate gas bubbles will appear. What is that gas?
a)
helium
b)
hydrogen
c)
oxygen
d)
carbon dioxide
43.
Which formula gives the correct symbols in a common salt?
a)
NaCl
b)
H2O
c)
O2
d)
H2SO4
44.
What kind of bond exists in NaCl?
a)
Metallic bond
b)
Chemical bond
c)
Ionic bond
d)
Van der Waals
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