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- color change
- formation of a precipitate
- temperature change
- formation of gas bubbles
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∙ 13y ago
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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
Energy is the energy needed to start a chemical reaction?
The energy needed to statr a chemical reaction is the 'Activation Energy' , which is given the symbol (Ea).
Can a chemical reaction cause heat?
Yes, the signs of a chemical reaction are: gas, precipitation, heat, color change
What substance lowers the energy needed to start a chemical reaction?
A substance that lowers the energy needed to start a chemical reaction is a catalyst.
Is a chemical reaction (Hint Think of the table with signs of a chemical reaction.)?
The question does not have the enough required information that is required to accurately answer it.
What is a chemical reaction Hint Think of the table with signs of a chemical reaction?
The question does not have the enough required information that is required to accurately answer it.
What compound is needed to start a chemical reaction?
The initial compounds in a chemical reaction are called reactants.
What nutrient does chemical reaction take place?
Vitamin nd minerals are the nutrient needed for chemical reaction because they are needed by the body in very small amounts to allow many different types of chemical reaction to take place.These chemical reactions are needed to maintain healthy functioning of the body
The changes that are visible during a chemical reaction are signs that the?
If it is a true or false question it is false
What energy is needed to start a chemical reaction?
It varies with the differences in chemical reactions
What substances is needed to start a chemical reaction?
reactants is your answer
Is it true that catalysts increase the activation energy needed to start a chemical reaction?
Catalysts actually lower the activation energy needed to start a chemical reaction. This makes the reaction happen more easily.
