Indicators of Chemical Change
Chemistry ⇒ Chemical Reactions and Equations
Indicators of Chemical Change starts at 7 and continues till grade 12.
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See sample questions for grade 7
Describe two differences between a physical change and a chemical change.
Describe two indicators that a chemical change has occurred when cooking an egg.
Describe what is meant by the term 'indicator of chemical change'.
Explain why the change in color of leaves in autumn is considered a chemical change.
Explain why the fizzing of soda when opened is not a chemical change.
When a candle burns, which indicator of chemical change can be observed?
When a piece of magnesium ribbon is burned, a bright white light is seen. What does this indicate?
When a tablet is dropped into water and bubbles form, what could this indicate?
When milk turns sour, which indicator of chemical change is observed?
When two solutions are mixed and a yellow solid forms, what is this solid called?
When vinegar is mixed with baking soda, bubbles are observed. What does this indicate?
A student mixes two colorless liquids in a beaker. After a few minutes, the beaker feels warm and a faint smell is noticed. Which two indicators of chemical change are observed in this scenario?
A student observes that when two clear solutions are mixed, the temperature of the mixture drops and a white solid forms. Which indicators of chemical change are present?
Describe a situation in daily life where both a change in color and the production of a gas indicate a chemical change.
Explain why the production of a new odor during a reaction is considered an indicator of a chemical change, and give an example.
