Question

What are the five major pieces of evidence that indicate chemical change?

Answer 1

Answer:

Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change. Challenge: food cooking, rust formation, tarnish forming on doorknobs, fuel burning for heat, tarnished penny.

Explanation:

Answer 2

• Color change
• Formation of precipitate
• Temperature change
• Odor change
• Formation of gas

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