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Lower a chemical reactions activation energy?
A catalyst lowers the activation energy without being consumed during a reaction
What is the meaning of the word catalyst?
A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process. It works by providing an alternative pathway with lower activation energy for the reaction to occur.
What is the meaning of word catalyst?
A catalyst speeds up a reaction by lowering the activation energy of the reaction. It is not consumed by the reaction, but rather it leaves the reaction unchanged.
What happens when delta h is positive?
When ΔH (the change in enthalpy) is positive, it means that the reaction is endothermic, absorbing heat from its surroundings. This indicates that energy is being consumed rather than released during the chemical reaction.
In a bio-chemical reaction what are the bio-molecules which are not consumed yet their presence is required?
In every biochemical reaction in the body, a specific enzyme is required to catalyze (speed up) the reaction. These enzymes are required for the reaction to take place, but are not consumed themselves in the reaction.
Is energy consumed at any time during an exothermic reaction?
Yes, during the time it absorbs energy to break bonds.
Is there energy consumed at any time during an exothermic reaction?
Yes, energy is consumed during the initiation of an exothermic reaction to break bonds in reactant molecules. Once the reaction starts, it releases more energy than it consumes, resulting in a net release of energy overall.
Lower a chemical reactions activation energy?
A catalyst lowers the activation energy without being consumed during a reaction
Does the amount of energy change during a chemical reaction?
duuh...of course it does
What is the measurement used to describe how much energy is produced or used during a chemical change?
The free energy (delta G) is the measure of the amount of energy produced or consumed in a reaction. Enthalpy (delta H) is a measure of the amount of heat produced or consumed in a reaction. These two quantities can sometimes be the same. When they are not, the other missing component where heat can be consumed or produced is work.
What graph shows the pathway of a reaction that absorbs energy?
A reaction that absorbs energy is endothermic and typically represented on a graph with a reactant energy level below the product energy level. This results in an increase in energy during the course of the reaction, with the energy barrier (activation energy) higher than that of an exothermic reaction.
What term is given to a substance which speeds up a reaction and is unchanged after the reaction?
Catalyst- lowers the activation energy of a reaction but is not consumed.
What is the mode of action of enzymes in reactions?
They lower the activation energy of the reaction without being consumed by the reaction.
Energy is _____ during glycolysis?
produced and consumed
What is the meaning of the word catalyst?
A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process. It works by providing an alternative pathway with lower activation energy for the reaction to occur.
What are two indicators that a combustion reaction has occurred?
energy is released and oxygen is consumed
What is the meaning of word catalyst?
A catalyst speeds up a reaction by lowering the activation energy of the reaction. It is not consumed by the reaction, but rather it leaves the reaction unchanged.
