A chemical reaction
Chemical changes are those in which the chemical composition of a substance changes during the process. But when steam turns into water or vice versa, only the physical state of the substance undergoes a change but the chemical composition remains same. Thus steam turning into water is a physical change.
Chemical
A process in which the chemical makeup of a substance is changed.
These are chemical reactions.
I think you are talking about a chemical change,
Chemical changes are those in which the chemical composition of a substance changes during the process. But when steam turns into water or vice versa, only the physical state of the substance undergoes a change but the chemical composition remains same. Thus steam turning into water is a physical change.
Chemical
A chemical action or reaction is a process that transforms one chemical substance to a new substance.
a "chemical reaction".
chemical reaction
Energy can either be soaked up by the matter in the process of making the change (melting), or be released from the matter during the change (fire).
The feature of an enzyme that determines its chemical process it aids is it's shape. This can be compared to a lock and key. Where an enzyme, as the key, must have a certain structure or multi-dimensional shape that matches a specific section of the substrate, the compound or substance that undergoes the change.
formula used in chemistry and a substance used in or a chemical process
A process in which the chemical makeup of a substance is changed.
Lighting a match starts a chain reaction which boosts the materials of the match tip, the wood with oxygen. These process changes the substance chemical formula, thus chemical change happens.
if at the end of the chemical THAT substance is unchanged .That substance is a catalyst. If it slows donw the reaction, it is called an inhibitor.
Is adsorption a chemical process in which one substance is taken up by another?