U2.2 Science: Dissolving

Front

What is dissolving?

Back

Dissolving is the process where a solid (solute) mixes with a liquid (solvent) to form a solution.

Front

What is a solute?

Back

A solute is a substance that is dissolved in a solution, such as sugar or salt in water.

Front

What is a solvent?

Back

A solvent is a liquid that dissolves a solute, forming a solution, like water or milk.

Front

What happens to the size of particles when they dissolve in water?

Back

The size of particles tends to decrease as they dissolve in water.

Front

What factors affect the rate of dissolving?

Back

The rate of dissolving can be affected by temperature, stirring, and the size of the solute particles.

Front

How does temperature affect dissolving?

Back

Higher temperatures usually increase the rate of dissolving because particles move faster.

Front

What is the fastest way to dissolve sugar in a drink?

Back

Dissolving sugar in hot tea is faster than in iced tea.

Front

What is the slowest way to dissolve chocolate syrup?

Back

Dissolving 100ml chocolate syrup in cold milk is the slowest method.

Front

What is mechanical energy in the context of dissolving?

Back

Mechanical energy refers to the energy applied through stirring or shaking to help dissolve a substance.

Front

What is the effect of stirring on dissolving?

Back

Stirring increases the rate of dissolving by moving the solute particles around and exposing them to the solvent.