Font size
WorksheetsKS3 Symbol Equations
Total questions: 20
Worksheet time: 20mins
Match the words to the symbols
Bromine
Br2
Hydrogen
H2
Oxygen
O2
Carbon
C
Nitrogen
N
Match the chemical to its formula
Hydrochloric acid
HCl
Nitric acid
HNO3
Sulfuric acid
H2SO4
Acetic acid
CH3COOH
Phosphoric acid
H3PO4
Match the chemical to its formula
Silicon dioxide
SiO2
Sodium Hydrogencarbonate
NaHCO3
Sodium chloride
NaCl
Potassium Nitrate
KNO3
Calcium carbonate
CaCO3
Match the chemical to its formula
Potassium Hydroxide
KOH
Ammonia
NH3
Silicon
Si
Hydrogen Peroxide
H2O2
Ammonium Nitrate
NH4NO3
Match the chemical to its formula
Potassium Sulphate
K2SO4
Magnesium
Mg
Lead Oxide
PbO
Lead
Pb
Sodium Hydroxide
NaOH
Which symbol shows a chemical reaction has occured?
A
B
C
D
Identify the product(s) in this word equation
Sodium
Sodium chloride
Sodium and Chlorine
Sodium and sodium chloride
The new substances formed in a chemical reaction are called
Reactants
Atoms
Products
Reagents
What are the reactants in this word equation?
Carbon dioxide and oxygen
Carbon dioxide and water
Oxygen and glucose
Oxygen and water
In a chemical reaction...
New atoms are created
Atoms rearrange
Atoms are destroyed
Nothing Happens
Magneisum reacts with oxygen to form magnesium oxide. The correct word equation is...
A
B
C
D
NaOH + HCl → NaCl + H2O
The elements in a formula are identified by their (a) .
Chemical formulas describe the number of (a) of each element in the substance.
2Al + 6HCl2 ---> AlCl3 + 3H2
How many different elements are taking part in the chemical reaction shown above?
(a)
2Al + 6HCl2 ---> AlCl3 + 3H2
How many atoms are represented in the reactants of the chemical equation that has been written above?
3
10
30
20
Element or Compound?
Na
Cl
NaCl
He
Zn
Fe2O3
SF6
Al2S3
How many hydrogen atoms are there?
1
4
5
6
Which of the following is the correct label for a bottle of Hydrochloric Acid?
HCL
hcl
HcL
HCl
Match the following
Sodium Chlorate
NaOCl
Nitrogen
N2
Carbon
C
Potassium Permanganate
KMnO4
Iron Oxide
Fe2O3
