5 Signs Of Chemical Reaction
Question: The production of a gas
Answer: This happens with two reactants (substance that undergoes change) combine, bubbles form indicating the production of CO2.
Question: Change of Color
Answer: *Many times when the Ph of a solution changes, the color changes.
Question: A change in temperature
Answer: When two substances of the same temperature react with one another it can cause a change in temperature. The temperature change can be either an increase(+) or a decrease(-).
Question: Production of light
Answer: When a substance rapidly combines with oxygen-combustion occurs and a flame is produced that gives off thermal energy and light.
Question: Precipitate forms
Answer: A precipitate is an insoluble compound formed out of a solution.