2.2 Substances Mixtures

• Natuurkunde / Scheikunde
• Middelbare school
• havo
• Leerjaar 2

Planning

• Revision 1.1

• Explanation H1.2 (Start)

• Let's work

What do you know about:
Substances

At the end of this lesson:

You will know:

• 
  
• What mixtures are
• What solution / suspension / emulsion are

You will be able to:

• Recognize the 3 mixtures

H2.1

• Substances are everywhere around us

• Everything is made from a substance 

H2.1

• Substances are everywhere around us

• Everything is made from a substance 

H2.1

• Substances are everywhere around us

• Everything is made from a substance 

• Some substances look similar

H2.1

• Substances are everywhere around us

• Everything is made from a substance 

• Some substances look similar

H2.1

• Substances recognize by it's characteristics :
• Properties

• For example:

1. Odour
2. Colour
3. Taste
4. Flammability

H2.2

• Substances consist of particals : 
• molecules

H2.2

2 Kind of substances:

• Pure substances

• Mixtures

Give a description of a 'pure substance'

Could you give an example?

Give a description of a 'mixture'

Could you give an example?

H2.2

• Pure substances
•        Consist of 1 substance, 1 kind of molecules

• Mixtures
•        Consist of 2 or more substance, 2 or more kind of molecules

H2.2

• Pure substances

• Mixtures

H2.2

• Pure substances

       Not realy common

• Mixtures

       Everywhere around us

H2.2

• Pure substances

• Mixtures

H2.2

• Mixtures

• 3 Types of mixtures

1. Solution
2. Suspension
3. Emulsion

Solution

• Solvent
• What is a solute/ dissolved substance?
  

• Clear, sometimes colored 

Solution

• Solvent
• What is a solute/ dissolved substance?
  

• Clear, sometimes colored 

Suspension

• A liquid with a floating fine powder
• The powder does not disolve!!
  

• Cloudy, colored 

Suspension

• A liquid with a floating fine powder
• The powder does not disolve!!
  

• Cloudy, colored 

Suspension

• A liquid with a floating fine powder
• The powder does not disolve!!
  

• Cloudy, colored 

Emulsion

• A cloudy mixture of two liquids,
• The liquids does not disolve!!
  

• Cloudy, colored 

Emulsion

• A cloudy mixture of two liquids,
  
• The liquids does not disolve!!
  

• Cloudy, colored 

Let's Work

- Read:

   Extra document: Pure substances + mixtures

- Finish the following exersises: 

   Extra document: 1, 2, 6, 7, 8, 9