Adaptive Practice
Chemical Reactions and Equations
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Question 1 of 10
⏱ 0:30
Easy
Which of the following is NOT a sign of a chemical reaction?
Easy
In the reaction 2Mg + O₂ → 2MgO, what type of reaction is this?
Easy
The law of conservation of mass states that:
Easy
When zinc is added to copper sulphate solution, the blue colour fades. What type of reaction is this?
Easy
Which of these is an example of a decomposition reaction?
Easy
Rusting of iron is an example of:
Easy
In a double displacement reaction:
Easy
A reaction that releases heat to the surroundings is called:
Easy
Which substance prevents oxidation of iron by acting as a protective coating?
Easy
The burning of magnesium in air can be represented as: