HV3 C1 Materials and substances (2)

H1 Materials and 
Lesson 2: Recap Mixtures and Separation Methods

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H1 Materials and 
Lesson 2: Recap Mixtures and Separation Methods


Slide 1 - Tekstslide

Class Goals Today
  • Review the particle model
  • Review pure substances and mixtures
  • Review separation methods
  • Class Quiz - What do you remember?

Slide 2 - Tekstslide

The particle model
  • Macro level properties depend on micro level molecules
  • Phase transitions like melting and boiling originate from moving molecules

Slide 3 - Tekstslide

Pure substances and mixtures
  • What is a pure substance?
  • Mixtures; heterogeneous, homogeneous 
  • Solutions, suspensions, emulsions
  • Composition, mass percentage calculations

Slide 4 - Tekstslide

Brass is a mixture of copper and zinc. 
400 g of brass contains 236 g of copper.
The masspercent of copper in messing is ...........%

Stainless steel contains 8 masspercent nickel and 18% chromium. How much nickel  is present in a slab of steel weighing 50 kg.
In deze plaat zit 
 kg nikkel.

Slide 5 - Tekstslide

One more...
Seawater contains 3% salt. How much seawater (in kg) do I need to obtain 12 kg of salt?

Slide 6 - Tekstslide

Separation Methods
  • Filtration
  • Sedimentation and decanting
  • Centrifugation
  • Evaporation
  • Distillation
  • Extraction
  • Adsorption

Slide 7 - Tekstslide

Quiz !!!

Slide 8 - Tekstslide

A liquid with small pieces of a solid substance floating in it. Each granule consists of a huge number of molecules.

Slide 9 - Open vraag

Materials of natural origin such as bone, wood and stone.

Slide 10 - Open vraag

The mass of a material or substance per unit volume.

Slide 11 - Open vraag

This substance contains several pure substances mixed together and so there are several types of molecules.

Slide 12 - Open vraag

How well substances and materials conduct heat or electricity.

Slide 13 - Open vraag

Separation method based on differences in solubility in which you dissolve substances from a mixture into the xxxxx agent.

Slide 14 - Open vraag

What tells you the ratios in which substances are present in a mixture.

Slide 15 - Open vraag

A mix of materials used to achieve better material properties.

Slide 16 - Open vraag

Separation method based on differences in density.

Slide 17 - Open vraag

Separation method based on differences in particle size.

Slide 18 - Open vraag

A substance that only contains a single type of molecule at the micro level.

Slide 19 - Open vraag

This mixture is made up entirely of separate molecules.

Slide 20 - Open vraag

Absorbing water or soluble in water.

Slide 21 - Open vraag

A liquid in which another substance is present. That other substance has been broken up into individual molecules.

Slide 22 - Open vraag

The state of matter for a substance: solid, liquid or gaseous.

Slide 23 - Open vraag