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WorksheetsChemical Reactions
Total questions: 12
Worksheet time: 23mins
What type of changes the appearance change but the substance is the same.
Physical
Chemical
Identify the following process: We light a matchstick.
Physical change
Chemical change
Identify the following process: The food and the air react.
Physical change
Chemical change
The initial substances before occurring the chemical reaction are called...
Reactants
Products
The new substances after occurring the chemical reaction are called...
Reactants
Products
A process in which one or more substances change into others different substances.
a chemical reaction
a mathematical equation
a chemical equation
The mass conservation law says
During a chemical reaction, atoms are destroyed. The number of atoms don't remains constant throughout the reaction.
During a chemical reaction, atoms are created. The number of atoms remains constant throughout the reaction.
During a chemical reaction, atoms are neither created nor destroyed. The number of atoms remains constant throughout the reaction.
The airbag is a real world application of...
synthesis reaction
decomposition reaction
combustion reaction
single deplacement reaction
Photosynthesis is a real world application of
synthesis reaction
decomposition reaction
combustion reaction
single deplacement reaction
Digestion is an example of...
synthesis reaction
decomposition reaction
combustion reaction
double deplacement reaction
