Understanding How Sugar Dissolves in Water

The video explains how sugar dissolves in water by detailing the interaction between sugar and water molecules. Initially, sugar is visible in water because the molecules have not yet interacted. As sugar is stirred, it seems to disappear because the sugar molecules are more attracted to water molecules than to each other. This process involves water molecules inserting themselves between sugar molecules, leading to dissolution.

What is the initial state of sugar when it is first poured into water?

• The sugar is completely dissolved.

• The sugar is still visible.

• The sugar molecules are surrounded by water molecules.

• The sugar molecules are broken down.

Why have the sugar molecules not interacted much with the water molecules initially?

• Because the sugar molecules have only just been exposed to the water.

• Because the sugar molecules are not attracted to water.

• Because the water is too cold.

• Because the water molecules are too far apart.

What happens to the sugar molecules when the water is stirred?

• They form a solid at the bottom.

• They mix with the water molecules.

• They become more attracted to each other.

• They disappear completely.

Why does sugar seem to disappear when stirred into water?

• Because the water molecules break down the sugar.

• Because the sugar molecules are too small to see.

• Because the sugar molecules are more attracted to the water molecules.

• Because the sugar molecules evaporate.

What do water molecules do to sugar molecules during the dissolving process?

• They break them into smaller pieces.

• They insert themselves between the sugar molecules.

• They evaporate them.

• They push them to the bottom.

What is the final state of sugar molecules in water?

• They form a solid layer at the bottom.

• They are surrounded by water molecules.

• They are more attracted to each other.

• They evaporate into the air.