Apr 19 Solubility

• physics, science
• Secondary Education

SCIENCE 

April 19, 2021

Ms. Famin

Grade-9

LET'S BEGIN 

1. What are your thoughts on online lessons ?

OBJECTIVES 

1. Describe solubility

2. Compare saturated and unsaturated solution

3. Analyse the factors affecting the solubility

PREDICT 

What happens when you add excess of sugar into the iced tea? 

challenge 

How do concentration and solubility differ?

ANALYSE 

Does stirring helps us in dissolving the sugar faster?

Factors affecting solubility 

1. Temperature

2. Pressure

Changing the temperature and pressure affects which of the following?

1. the concentration of an unsaturated solution
2. the polarity of the solvent
3. the solubility of a solute in a particular solvent
4. none of these

Which can change the solubility of a solid in a liquid?

1. crushing the solute
2. stirring the solute
3. increasing the temperature
4. changes in pressure

From the graph, what mass of sodium chloride added to 100 g of water at 80 C to form a saturated solution ?

1. 36 g
2. 39 g
3. 40 g
4. 100 g

CRITICAL THINKING- A student wants to increase the maximum amount of sugar that can dissolve in water,she crushes the water and then stirs it into water.Does this work

Predict-Imagine you have made a solution that contains 50 g of potassium chloride in 100 g solution. Predict what would you observe as you gradually increase the temperature

objective check 

1. Describe solubility

2. Compare saturated and unsaturated solution

3. Analyse the factors affecting the solubility

Write two words you learnt today