2.2 Substances Mixtures

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

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

H2.2

2 Kind of substances:

• Pure substances

• Mixtures

H2.2

• Substances consist of particals : 
• molecules

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

Not realy common

• Mixtures

Everywhere around us

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 

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 

Extraction

• Filtration
• Aroma's, colour, flavours