Would somebody be so kind and help me with my homework,please?Explain, how a substance will dissolve differently if the temperature changes. Thank you for help.

Here's and example;

Hot water vs. Cold water.
When you mix sugar in hot water it dissolves faster and better then it would in a cold water because of the temperature.
When the temperature of water is higher(hot) the water molecules move faster so they are able collide with the sugar molecules and bond faster then cold water. That is why temperature can effect how different a substance will dissolve.

In simple terms...
Differently depending on temperature:
-The temperature can make the dissolving process faster or slower depending on the temperature. (hot=faster, cold=slower)
-Hot temperatures can allow more dissolution to occur.

You are a star.Thank you.

Your welcome, I hope I explained it well enough :)

Of course, I'll be happy to help you understand how a substance dissolves differently when the temperature changes. When we talk about substance dissolving, we usually refer to a solute (the substance being dissolved) and a solvent (the substance doing the dissolving). Let's use table salt (sodium chloride) dissolving in water as an example.

When the temperature increases:

1. Increased Kinetic Energy: As the temperature rises, the kinetic energy of the water molecules increases. This causes the water molecules to move faster and collide with the salt crystals more frequently and with more force.

2. Enhanced Solvent-Solute Interaction: The increased kinetic energy also results in stronger interactions between the water molecules and the salt crystals. The water molecules can more effectively break the ionic bonds holding the salt crystals together, resulting in more successful dissolution.

3. Greater Solubility: Due to the increased kinetic energy and stronger interactions, more salt particles can be surrounded and dispersed by water molecules. As a result, the solubility of the salt in water increases. Solubility refers to the maximum amount of solute that can dissolve in a given amount of solvent.

When the temperature decreases:

1. Decreased Kinetic Energy: As the temperature decreases, the kinetic energy of the water molecules decreases. This means that the water molecules move slower and collide less frequently and with less force with the salt crystals.

2. Weaker Solvent-Solute Interaction: With reduced kinetic energy, the interactions between the water molecules and the salt crystals become weaker. The water molecules are less capable of breaking the ionic bonds, leading to slower dissolution.

3. Lower Solubility: Due to the weaker interactions between water molecules and salt crystals, fewer salt particles are surrounded and dispersed by the water molecules. This leads to a decrease in the solubility of the salt in water.

In summary, when the temperature increases, the solubility of a substance generally increases because of increased kinetic energy and stronger interactions between the solvent molecules and solute particles. On the other hand, when the temperature decreases, the solubility usually decreases due to reduced kinetic energy and weaker interactions. Remember, this explanation can be applied to many solutes and solvents, but it is not universally true for all substances.