Lesson 1 Substances

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NatuurkundeMiddelbare schoolvwoLeerjaar 2

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Slide 1 - Diapositive

New chapter! 
- Introduction chapter 2
- Some questions together
- Time for homework

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Introduction
Substances

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Together 
In groups of 3 or 4

First write down as many substaces as you know

After that, categorise ALL of the substances in to the right groups.

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Recognising substances by property
Odour (smell)
Colour 
Taste
Flammability
Grain size
Magnetic
Phase
Density

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I've got two bottles of clear liquids. One is water and the other is alcohol.
I want to figure out which is which. What property could i use?
A
Colour
B
Odour
C
Phase
D
Flammebility

Slide 7 - Quiz

I've got suger and salt, what property could I use to keep them apart?
A
Colour
B
Magnetic
C
Grain size
D
Phase

Slide 8 - Quiz

I'm going to do a PA with a substance that is know to be corrosive.
What measures should I take?
A
Open a window
B
Make sure there are no sparks
C
Wear protective clothing, goggles and gloves

Slide 9 - Quiz

Write down a substance that could be dangerous when inhaled:

Slide 10 - Question ouverte

Write down a substance that could be dangerous when you swallow it:

Slide 11 - Question ouverte

Write down a substance that could be dangerous when it gets on your skin, clothes or in your eyes:

Slide 12 - Question ouverte

harmful
toxic
oxidising
flammable
explosive
corrosive

Slide 13 - Question de remorquage

Recap:
Rocognise substances by  properties, we know 8 different propperties.

Hazard symbols also give you information about a substance, we know 6 different symbols. 

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Homework
Exercises 1 - 8

Page 16

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