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The changes that are visible during a chemical reaction are signs that the?
Wiki User
∙ 9y ago
If it is a true or false question it is false
Wiki User
∙ 9y ago
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Chemical reactions always involve changes in a chemical?
There will always be changes in one of the reactants. In some chemical reactions, one of the chemicals works as a catalyst to encourage a reaction between two or more chemicals but does not change during the reaction.
If one substance changes color is it a chemical reaction?
Not necessarily. Things sometimes change colors during a chemical reaction, but a color change is not sufficient evidence of a chemical reaction. You can add drink mix to water and the water turns colors, but it is not a chemical reaction, just a mixture.
Is fashioning a table leg from a piece of wood chemical or physical changes?
Physical. Physical changes include things such as changing shape or color. Chemical changes change the chemical properties of a material, often during a chemical reaction.
What chemical equation shows that no atoms are lost during a chemical reaction?
This is a balanced chemical reaction.
What is the definition of chemical properties?
Chemical properties are properties that describe the potential certain matter has to undergo some chemical change. An example of this would be the alkali metal's (group 1 metals) explosive reaction with water. Another would be how volatile gasoline can be.
The changes that are visible during a chemical reaction are signs that the nuclei in the reactants have been rearranged.?
False.
What are the changes that are visible during a chemical reaction that are signs that the reactants have been rearranged?
If it is a true or false question it is false
What is meant by thermodynamics of a chemical reaction?
It refers to the energy changes that take place during a chemical reaction.
What shows changes that take place during a chemical reaction?
A chemical equation
Chemical reactions always involve changes in a chemical?
There will always be changes in one of the reactants. In some chemical reactions, one of the chemicals works as a catalyst to encourage a reaction between two or more chemicals but does not change during the reaction.
What are Two main kinds of changes that you can observe when chemical reaction occur?
a precipitate is a solid that forms during a chemical reactions
If one substance changes color is it a chemical reaction?
Not necessarily. Things sometimes change colors during a chemical reaction, but a color change is not sufficient evidence of a chemical reaction. You can add drink mix to water and the water turns colors, but it is not a chemical reaction, just a mixture.
How can you tell if a physical reaction is occuring?
During a physical change the chemical molecule is not affected; physical changes are changes of phase or form.
In terms of particles how and why the rate of reaction changes during the reaction of calcium carbonate with hydrochloric acid.?
The chemical reaction goes faster if calcium carbonate is powdered.
What undergoes no chemical change during a chemical reaction?
A catalyst undergoes no chemical change during a chemical reaction.
Is fashioning a table leg from a piece of wood chemical or physical changes?
Physical. Physical changes include things such as changing shape or color. Chemical changes change the chemical properties of a material, often during a chemical reaction.
Is endothermic a chemical reaction?
Yes. A chemical reaction which absorbs heat during the reaction. The opposite to exothermic which releases heat during the reaction.
