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WorksheetsChemical equation
Total questions: 30
Worksheet time: 38mins
How many elements are in this chemical formula? NaHCO3
1
2
3
4
How many Magnesium atoms are in 10MgCl2?
(a)
How many different elements are present in H2COCH2
(a)
How many Mn atoms are found in the following compound?
2MnO4
1
2
4
8
H2 + O2 -> H2O
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
How many Hydrogen are in 4H2O?
(a)
How many atoms of carbon (C) are in C6H12O6?
(a)
What is the number before a chemical formula called?
Example: 2H2 + O2 ---> 2H2O
Coefficient
Atom
Subscript
Equation
What is the little number after an element in a chemical equation called?
Example: H2
(a)
What is the right part of a chemical equation called?
2H2 + O2 ---> 2H2O
(a)
What is the left part of a chemical equation called?
2H2 + O2 ---> 2H2O
(a)
How many oxygen atoms are present in the following?
4Ca(OH)2
(a)
How many molecules of KNO3 are shown?
1
2
3
4
Is the compound in the pink box a Reactant or a Product?
Reactant
Product
How many atoms of nitrogen are present in this molecule?
1
2
3
4
What are the blue numbers called?
oxidation numbers
subscripts
group numbers
product numbers
Identify the number in blue.
Product
Reactant
Coefficient
Subscript
Identify the Reactants in this equation.
A
B
How many just Sodium (Na) atoms are in 3NaC3P4
3
6
9
12
How many Oxygen atoms are in 3C6H12O6
(a)
How many atoms are in 3KN4
(a)
How many total atoms are in 2H2O
(a)
