L11 - Solutions

• Chemistry
• Secondary Education

Lesson 1 - What is IGCSE Chemistry?

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Lesson 11 - Solutions

I will be successful if I can...

• classify a substance as an element, compound, or mixture, 
• give examples of an element, compound, or mixture I use or consume daily,
  
• describe what a solution is,
• describe how a soluble solid dissolves in a solvent,
• describe how to make a saturated solution,
• differentiate a residue from filtrate or distillate, and
• carry out each method of separation and purification: 
• (a) a suitable solvent
• (b) filtration
• (c) crystallisation.

Pure (Au) gold is a(n) _____________.

1. mixture
2. element
3. compound

Sugar is a(n) _____________.

1. mixture
2. element
3. compound

Seawater is a(n) _____________.

1. mixture
2. element
3. compound

Mineral water is a(n) _____________.

1. mixture
2. element
3. compound

The oxygen in the tank is a(n) _____________.

1. mixture
2. element
3. compound

Which of the given diagrams shows a compound?

1. A only
2. A and D
3. A and B
4. B and C

Which of the given diagrams shows an element?

1. A only
2. A and D
3. A and B
4. B and C

Which of the given diagrams shows a mixture?

1. A only
2. C and D
3. A and D
4. D only

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Question

What does the water say to the solute?

Can you make a solution with:
an insoluble solid + water ?

Lesson 1 - What is IGCSE Chemistry?

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9

Lesson 12 - Separation and Purification Techniques

It is a technique of separating a solid from a liquid using a fine filter paper.

1. filtration
2. evaporation
3. distillation
4. crystallisation

It is a process of changing liquid into vapour (gas) on the surface of a liquid below a boiling point.

1. filtration
2. evaporation
3. distillation
4. crystallisation

It is a process of boiling a liquid to produce vapour, and then condensing it back into liquid.

1. filtration
2. evaporation
3. distillation
4. crystallisation

Choosing the suitable solvent

Choosing the suitable solvent

"Like dissolves Like."

Filtration

Conical flask

Filter funnel

Receiver

Filtrate

Stand with boss and clamp

Crystallisation by evaporation

Simple distillation

• Crystallise the filtrate by evaporation. 
• Do you see any crystals? Does it prove your   hypothesis?

• Filtering the mixture. Do you see any residue?   Predict what the residue is.

Practical Work (Practice)

• Choosing the suitable solvent. Is it polar or non-polar?

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Scientific Question: Does mixture X contain salt?

• Open your notebook.
• Look for this.
• Read.
• Reflect.
• Complete.

Chemistry

 Journal

Name something you did not know before this lesson, 

but NOW you do! 

• You have 15 minutes to complete this task.

Classwork 7: States of matter

• Prepare your black or blue pen.

• Answer the given questions.

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