Characteristics of Chemical Reactions
Chemistry ⇒ Chemical Reactions and Equations
Characteristics of Chemical Reactions starts at 7 and continues till grade 12.
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See sample questions for grade 7
Describe one way to tell if a chemical reaction has taken place.
Describe what happens to the properties of substances during a chemical reaction.
Describe what is meant by the term 'precipitate' in a chemical reaction.
Explain why burning wood is considered a chemical reaction.
Explain why dissolving sugar in water is not a chemical reaction.
Explain why the rusting of iron is considered a chemical reaction.
Is the evolution of heat during a reaction a physical or chemical change?
When iron reacts with oxygen and water, it forms rust. What is the new substance formed called?
When magnesium ribbon burns in air, it forms a white powder. What does this indicate?
When two substances react and a new odor is produced, what does this suggest?
When vinegar is mixed with baking soda, bubbles are produced. What does this indicate about the reaction?
