Can you change the reactants in a chemical reaction?
In a chemical reaction, substances (elements and/or compounds) called reactants are changed into other substances (compounds and/or elements) called products. You can’t change one element into another in a chemical reaction — that happens in nuclear reactions.
How does the concentration of reactants affect the rate of a reaction?
How does concentration affect the rate of a reaction? Increasing the concentration of the reactants will increase the frequency of collisions between the two reactants. Higher concentrations mean more collisions and more opportunities for reaction.
How the factors affect the chemical reaction?
Several factors can influence the chemical reaction rate….Summary of Factors.
| Factor | Affect on Reaction Rate |
|---|---|
| temperature | increasing temperature increases reaction rate |
| pressure | increasing pressure increases reaction rate |
| concentration | in a solution, increasing the amount of reactants increases the reaction rate |
What is a reactant in a chemical reaction?
NARRATOR: A chemical reaction is when two or more substances combine or interact; they are known as reactants. The substances may change as the elements within them may recombine into new substances. It uses oxygen from the air and cellulose from the match as the reactants.
Why does the reaction rate change as concentrations of the reactants change?
As concentration of reactants increases, the rate of the reaction will increase. This is due to the increased numbers of reactant particles having more frequent collisions with each other. A greater frequency of effective collisions will increase the rate of a reaction.
What change would most likely decrease the rate of a chemical reaction?
The reaction rate decreases with a decrease in temperature. Catalysts can lower the activation energy and increase the reaction rate without being consumed in the reaction. Differences in the inherent structures of reactants can lead to differences in reaction rates.
