Question

Signs of a chemical change

Answer 1

Answer: There are five signs of chemical change

• Color Change
• Production of an odor
• Change of Temperature
• Evolution of Gas (bubbles start to form)
• Precipitate (starts to form a solid)

When these signs start to form you know chemical change is at work.

Hope this helps :)

Answer 2

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. Hope this helps!!