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WorksheetsChemical Equations
Total questions: 12
Worksheet time: 9mins
__CH4 + __O2 --> __CO2 + __H2O
What are the reactants in this equation?
CH4
O2
CO2
H2O
__CH4 + __O2 --> __CO2 + __H2O
Which of these molecules is an element?
CH4
O2
CO2
H2O
__CH4 + __O2 --> __CO2 + __H2O
Which molecule is made of 5 atoms?
CH4
O2
CO2
H2O
__CH4 + __O2 --> __CO2 + __H2O
which 2 molecules are made of 3 atoms?
CH4
O2
CO2
H2O
__CH4 + __O2 --> __CO2 + __H2O
which molecule is water?
CH4
O2
CO2
H2O
__CH4 + __O2 --> __CO2 + __H2O
which molecule is carbon dioxide?
CH4
O2
CO2
H2O
__CH4 + __O2 --> __CO2 + __H2O
which molecule is methane
CH4
O2
CO2
H2O
(a) CH4 + (b) O2 --> (c) CO2 + (d) H2O
which molecule(s) require a 2 in front of them to balance the equation?
When writing a chemical equation, reactants are on the _____________ while products are on the _________________.
top, bottom
right, left
left, right
bottom, top
In a chemical equation...
a new substance is formed
new atoms are formed
old atoms disappear
a equal sign is always used
Products are
old substances
new substances
atoms that disappear
atoms that do not exist
Reactants are
new substances
old substances
likely to disappear
likely to appear
