1.3 Mixtures of substances

• Chem
• Secondary Education

Lesson 1.3 Mixtures of substances and diffusion

Choose an emoji to tell us how you feel today.

😒🙁😐🙂😃

www.bookwidgets.com

salt solution

salt solution

solute

solvent

solids

gases

What is the most common solvent in use?

1. water
2. oil
3. ethanol
4. air

Which of the following is NOT an organic solvent?

1. ethanol
2. propanone
3. trichloroethane
4. water

MISCIBLE AND IMMISCIBLE

When you mix iron and nickel metals, do we call it a "solution" as well?

YES

NO

Solubility of solids in liquids

Based on the graph, how does temperature affect the solubility of solids?

1. It increases.
2. It decreases.
3. It remains constant.
4. It vaporises.

Solubility of gases in liquids

Based on the graph, how does temperature affect the solubility of gases?

1. It increases with low temperature.
2. It decreases with high temperature.
3. It remains constant.
4. It decreases with low temperature.

QUESTION

What happens when you release the pressure?

Lesson 1.3 Mixtures of substances and diffusion

Diffusion

Main ideas involved in diffusion

• particles move from a region of HIGH to LOW concentration until equilibrium
• the rate of diffusion in liquids is much SLOWER than in gases
• diffusion does NOT take place in solids as the particles cannot move from place to place

Lesson 1.3 Mixtures of substances and diffusion

Rate your understanding of the topic using the scale below.

15