Question

1. a catalyst usually lowers the energy required to initiate the reaction. true false 22) a water molecule (h₂o) is made of one hydrogen atom and two oxygen atoms. true false 23) suppose you added a tablespoon of sugar to hot water and another to ice - cold water. which type of water will cause the sugar to dissolve more quickly?

Explanation:

1. A catalyst works by providing an alternative reaction pathway with a lower activation - energy barrier, thus lowering the energy required to initiate the reaction.
2. A water molecule ($H_2O$) consists of two hydrogen atoms and one oxygen atom, not one hydrogen and two oxygen atoms.
3. The solubility of a solid (like sugar) in a liquid increases with temperature. Higher - temperature water has more kinetic energy, which helps break the intermolecular forces holding the sugar together and allows it to dissolve more quickly.

Answer:

1. True
2. False
3. Hot water