How do catalysts affect a chemical reaction?
Provide activation energy
Increase activation energy
Lose activation energy
Lower activation energy
Catalysts lower the activation energy of a chemical reaction. Activation energy is the energy required for a reaction to start or proceed. By lowering the activation energy, catalysts make it easier for the reactants to overcome the energy barrier and initiate the reaction. This allows the reaction to occur more quickly or at lower temperatures than it would without a catalyst. In other words, catalysts provide an alternative reaction pathway with a lower activation energy, making the reaction more favorable.
Which answer is it
Catalysts lower the activation energy of a chemical reaction.
What happens during rusting of a iron nail
Iron and sulfur combine to form iron sulfide
Sulfur and oxygen combine to form a Sulfur dioxide coating
Iron and oxygen combine to form iron oxide
Sulfur, iron, and oxygen to form iron sulfoxide
Iron and oxygen combine to form iron oxide during the rusting of an iron nail.
What does a forward arrow in a chemical equation mean
The reaction proceeds quickly
The reaction proceeds slowly
The reaction yields something
The reaction is reversible
The forward arrow in a chemical equation represents the direction in which the reaction proceeds. It does not indicate the speed of the reaction or whether the reaction is reversible or not.
Which is it quickly or slowly
The forward arrow in a chemical equation does not indicate whether the reaction is fast or slow. The speed of the reaction can vary and is not specified by the arrow.
Is the reaction yields something correct
Yes, "the reaction yields something" is a correct interpretation of the forward arrow in a chemical equation. The arrow is used to indicate the product(s) that are formed as a result of the reaction. It shows what the reactants are transforming into or producing. So, the reaction on the left side of the arrow yields the product(s) on the right side of the arrow.
What kind of reaction is Photosynthesis
Exothermic
Light-independent
Endothermic
Temperature- independent
Photosynthesis is an endothermic reaction. This means that it requires energy input in the form of sunlight to proceed. Specifically, photosynthesis is a process in which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose and oxygen.
Photosynthesis requires which kind of energy
Heat energy
Light energy
Thermal energy
Mechanical energy