Exploring Solutions in Grade 7 Science

Teacher Jane from Teach Talk introduces the concept of solutions, explaining their phases and components. The video covers the differences between solute and solvent, and demonstrates an experiment with sugar and water. Solutions are classified based on their phases and the amount of solute they contain, including unsaturated, saturated, and supersaturated solutions. A quiz at the end helps reinforce the learning objectives.

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• To entertain viewers with fun videos

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• To share cooking recipes

• To teach programming languages

What is a solution in terms of mixtures?

• A heterogeneous mixture

• A homogeneous mixture

• A mixture of gases

• A mixture of solids

Which component of a solution is usually present in smaller amounts?

• Solvent

• Mixture

• Solute

• Water

In a gaseous solution, what phase are both the solute and solvent in?

• Solid phase

• Liquid phase

• Gas phase

• Any phase

What is an example of a liquid solution?

• Vinegar

• Bronze

• Air

• Dental amalgam

How can you identify an unsaturated solution?

• By adding more solvent

• By adding more solute and it still dissolves

• By heating the solution

• By cooling the solution

What happens when a solution becomes saturated?

• The solution becomes a gas

• The solvent changes phase

• The solute no longer dissolves

• The solute starts to evaporate

What is a characteristic of a supersaturated solution?

• It contains less solute than can be dissolved

• It contains the maximum amount of solute

• Crystals form as the solute no longer dissolves

• It is always in a solid phase

Which of the following is a solid solution?

• Salt water

• Vinegar

• Air

• Bronze

What type of solution is a carbonated drink?

• Solid solution

• Liquid solution

• None of the above

• Gaseous solution