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When atoms combine is it a physical change or a chemical change?
When atoms combine to form molecules, it is a chemical change. In a chemical change, new substances are formed with different properties from the original substances. This is in contrast to physical changes, where the state or appearance of a substance may change without forming new substances.
What are products reactants and catalysts?
* Reactants: the initial compounds in a chemical reaction. * Products: the final compounds in a chemical reaction. * Catalyst: a chemical compound which help the chemical reaction but not react with the other compounds.
What is it called when one or more substances change into one or more new substances?
This could refer to a chemical transformation (chemical change), a chemical reaction, or spontaneous change. Some changes require another substance or substances to be mixed together. Some reactions will occur by themselves without any outside manipulation or stimulation.
What do you call a special protein that help change substances during chemical reactions?
Enzymes are special proteins that help change substances during chemical reactions by speeding up the reaction process without being consumed in the reaction.
What are 5 key words in a chemical change?
Reactants: Substances that are present before a chemical reaction occurs. Products: Substances that are produced as a result of a chemical reaction. Chemical reaction: Process where reactants are transformed into products, often involving the breaking and forming of chemical bonds. Energy: May be absorbed or released during chemical reactions, impacting the reaction's outcome. Catalyst: Substance that speeds up a chemical reaction without being consumed in the process.
When atoms combine is it a physical change or a chemical change?
When atoms combine to form molecules, it is a chemical change. In a chemical change, new substances are formed with different properties from the original substances. This is in contrast to physical changes, where the state or appearance of a substance may change without forming new substances.
What are substances that change the rate of a chemical reaction without themselves being changed?
Those substances are called, "Catalysts".
What are products reactants and catalysts?
* Reactants: the initial compounds in a chemical reaction. * Products: the final compounds in a chemical reaction. * Catalyst: a chemical compound which help the chemical reaction but not react with the other compounds.
What do catalyst substances do to the rate of a chemical reaction?
Catalysts substances increase the rate of a chemical reaction by providing an alternative pathway with lower activation energy for the reaction to occur. This allows the reaction to proceed faster and more efficiently without being consumed in the process.
What is it called when one or more substances change into one or more new substances?
This could refer to a chemical transformation (chemical change), a chemical reaction, or spontaneous change. Some changes require another substance or substances to be mixed together. Some reactions will occur by themselves without any outside manipulation or stimulation.
When two or more are mixed together without undergoing a chemical reaction it results in a what?
A mixture of the substances
What do you call a special protein that help change substances during chemical reactions?
Enzymes are special proteins that help change substances during chemical reactions by speeding up the reaction process without being consumed in the reaction.
What are 5 key words in a chemical change?
Reactants: Substances that are present before a chemical reaction occurs. Products: Substances that are produced as a result of a chemical reaction. Chemical reaction: Process where reactants are transformed into products, often involving the breaking and forming of chemical bonds. Energy: May be absorbed or released during chemical reactions, impacting the reaction's outcome. Catalyst: Substance that speeds up a chemical reaction without being consumed in the process.
When substances are combined and no reaction occurs?
When substances are combined and no reaction occurs, it means that the substances are not capable of undergoing a chemical reaction with each other. This could be due to factors like the stability of the molecules, the absence of necessary reactants, or the lack of sufficient energy to drive a reaction. In these cases, the substances may simply mix together physically without forming any new chemical bonds.
What is a kind of mixture?
Two or more chemical substances, mixed without a chemical reaction form a mixture; examples: wine, asphalt, juice, air.
Why did Dalton say that a chemical reaction is a rearrangement of atoms?
Dalton proposed that a chemical reaction is a rearrangement of atoms because he believed that in chemical reactions, atoms are not created or destroyed, but rather rearranged to form different compounds. This idea helped to explain how different elements combine to form new substances without changing the total number of atoms present.
Undergo no chemical change during a chemical reaction?
A catalyst doesn't undergo a chemical change during a chemical reaction.
