The starter and exit quiz of the lesson “Chemical reactions: combustion”, from the unit “Understanding chemical reactions” (Year 8 Science) by Oak National Academy.
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Oak National Academy
12 questions
Combustion requires fuel, ___, and an initial source of energy, usually heat, to start the reaction.
Match the states of matter with their characteristics:
During a chemical reaction, the total mass of the reactants ___ the total mass of the products.
When atoms of different elements bond together, they form a ___.
CO₂ contains carbon and oxygen atoms. Which of the following chemicals also contain both carbon and oxygen atoms?
Match up the word equations for the oxidation reactions:
What is combustion?
Burning is a type of combustion where substances react with oxygen and produce visible ___.
Which of the following is often formed in chemical reactions if oxygen and carbon atoms are present?
___ is often formed in chemical reactions if oxygen and hydrogen atoms are present.
A ___ is a substance that releases stored energy during combustion.
When there is limited oxygen present during a combustion reaction, carbon monoxide will be produced (not carbon dioxide). What is the formula for carbon monoxide?
