Answer:
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Explanation:
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Answer:
B
Explanation:
B
Explanation:
A catalyst lowers the activation energy of a reaction allowing them to proceed faster than they would naturally. Activation energy is the free energy that is required to be input in the reactant side to activate them to the transition state after which the reaction proceeds spontaneously to products.
An example of a catalyst is platinum, that is put in the exhaust of cars, to help convert carbon monoxide to carbon dioxide before it is emitted into the air.
Answer: they lower these activation required for the reactions to take place.
Explanation:
Atoms in the liquid water move more slowly.
Atoms in the liquid water move more quickly.
More hydrogen bonds form between the molecules.
When water changes from a liquid to a solid, the atoms move slower and form more hydrogen bonds, giving ice its solid structure.
When liquid water transforms to a solid state (i.e. ice), the motion between water molecules changes. Hydrogen bonds are actually formed, not broken. Because of the decrease in temperature, atoms in the liquid water start to move more slowly, not quickly. This slower movement allows for more hydrogen bonds to form between the water molecules, which is what essentially gives ice its solid structure.
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