Question

Give two changes produced by chemical reactions.​

Answer 1

Answer:

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Chemical Reaction Changes -

• halogenation
• methylation
• crude oil cracking
• polymerization.

Answer 2

Evidence of a chemical change

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.

Change of composition - paper turning to ash when burned.

Light and/or heat given off.