Practice Hub

Flash Cards: The Amazing World of Solutes, Solvents, and Solutions

Structured practice

The Amazing World of Solutes, Solvents, and Solutions - Flash Cards

These flash cards cover important concepts from The Amazing World of Solutes, Solvents, and Solutions in Curiosity for Class 8 (Science).
View all (19)

1/19

Define a solution.

1/19

A solution is a uniform mixture formed when a solute dissolves in a solvent.

How well did you know this?

Not at allPerfectly

2/19

What is meant by 'solute'?

2/19

A solute is the substance that is dissolved in a solution, usually present in a smaller amount.

How well did you know this?

Not at allPerfectly
Active

3/19

Define 'solvent'.

Active

3/19

A solvent is the component in a solution that dissolves the solute, usually present in a larger amount.

How well did you know this?

Not at allPerfectly

4/19

What are uniform and non-uniform mixtures?

4/19

Uniform mixtures (solutions) have evenly distributed components. Non-uniform mixtures have visibly separate parts.

5/19

Define solubility.

5/19

Solubility is the maximum amount of solute that can dissolve in a specific amount of solvent at a given temperature.

6/19

What is a saturated solution?

6/19

A saturated solution can no longer dissolve more solute at a given temperature.

7/19

Define unsaturated solution.

7/19

An unsaturated solution can still dissolve more solute at a given temperature.

8/19

What is the formula for density?

8/19

Density = Mass / Volume

9/19

How does temperature affect solubility?

9/19

Generally, solubility increases with temperature for most solids.

10/19

Can gases dissolve in water?

10/19

Yes, gases like oxygen can dissolve in water, but their solubility decreases with increasing temperature.

11/19

Differentiate concentrated and dilute solutions.

11/19

A concentrated solution contains a large amount of solute, while a dilute solution has a small amount of solute.

12/19

What determines if an object floats or sinks?

12/19

Density compared to the liquid: objects less dense than the liquid float, while denser objects sink.

13/19

Why does ice float on water?

13/19

Ice is less dense than liquid water, allowing it to float.

14/19

Why is water called a universal solvent?

14/19

Water can dissolve many substances due to its polarity and hydrogen bonding capabilities.

15/19

How do you measure the volume of a liquid?

15/19

Use a measuring cylinder; read the bottom of the meniscus at eye level.

16/19

What happens when you exceed the solubility limit?

16/19

Exceeding solubility causes the excess solute to remain undissolved at the bottom.

17/19

What is a common mistake regarding solubility?

17/19

Assuming that stirring will increase solubility when it has already reached saturation.

18/19

Can two liquids be a solution?

18/19

Yes, when mixed, the solvent is the liquid present in the larger amount.

19/19

How has water been historically used in medicine?

19/19

Water has been used as a solvent for preparing medicinal formulations for centuries.