Indicators of Chemical Change
Chemistry ⇒ Chemical Reactions and Equations
Indicators of Chemical Change starts at 7 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Indicators of Chemical Change.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 8
A student heats a blue copper sulfate crystal and observes it turns white. What does this color change indicate?
A student mixes two colorless liquids and observes a yellow color forming. What does this color change indicate?
A student mixes two solutions and the temperature of the mixture increases. What does this suggest?
A student notices a rotten egg smell after mixing two chemicals. What does this indicate?
A student observes fizzing when acid is added to a metal. What does this observation indicate?
A student observes that a solution turns cloudy after mixing two clear liquids. What does this cloudiness indicate?
Describe two differences between a physical change and a chemical change.
Describe two indicators that a chemical change has occurred when wood burns.
Describe what is meant by the term 'indicator of chemical change'.
Explain why a change in temperature can be an indicator of a chemical change.
Explain why cooking an egg is considered a chemical change.
Explain why melting ice is not considered a chemical change.
Explain why the rusting of iron is considered a chemical change.
When vinegar is mixed with baking soda, bubbles are observed. What does the formation of bubbles indicate?
