Question

Give two characteristic of of chemical change with example

Answer 1

Explanation:

The following can indicate that a chemical change has taken place, although this evidence is not conclusive:

• Change of door.
• Change of color (for example, silver to reddish-brown when iron rusts).
• Change in temperature or energy, such as the production (exothermic) or loss (endothermic) of heat.

Answer 2

Explanation:

The following can indicate that a chemical change has taken place, although this evidence is not conclusive:

Change of odor.

Change of color (for example, silver to reddish-brown when iron rusts).

Change in temperature or energy, such as the production (exothermic) or loss (endothermic) of heat.