The following are signs that a chemical reaction may have occurred:The formation of a precipitate may indicate that a chemical reaction has occurred. …Color changes may indicate the presence of a chemical reaction.Temperature changes are often indicative of chemical reactions. …The production of odor may indicate that a chemical reaction has occurred. …Bubbles may be a sign that a chemical reaction has occurred. …
People also ask
How do you know if a chemical reaction has occurred?
A: Yes, a chemical reaction occurred. You know because the bubbles are evidence that a gas has been produced and production of a gas is a sign of a chemical reaction. Potential signs that chemical reactions have occurred include a change in color, change in temperature , formation of a gas, and formation of a precipitate.
What are the signs of a chemical change?
In general, the signs of a chemical change are the following: Formation of a precipitate. Production of a gas. Change in colour. Energy change.
What are the changes that are visible during chemical reactions?
According to scientists, the changes that are visible during a chemical reaction are signs that the atoms in the reactants have been rearranged. What are the signs of physical change from a chemical change? Signs of physical change – Change in appearance,taste,display of substance Signs of chemical change- Change in chemical reaction
What are the 5 conditions of a chemical reaction?
The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change. Also, what are the 4 signs of a chemical reaction?