Lesson 1 Substances

• Natuurkunde
• Middelbare school
• vwo
• Leerjaar 2

New chapter! 

- Introduction chapter 2

- Some questions together

- Time for homework

Introduction

Substances

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.

Recognising substances by property

Odour (smell)

Colour 

Taste

Flammability

Grain size

Magnetic

Phase

Density

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?

1. Colour
2. Odour
3. Phase
4. Flammebility

I've got suger and salt, what property could I use to keep them apart?

1. Colour
2. Magnetic
3. Grain size
4. Phase

I'm going to do a PA with a substance that is know to be corrosive.
What measures should I take?

1. Open a window
2. Make sure there are no sparks
3. Wear protective clothing, goggles and gloves

Write down a substance that could be dangerous when inhaled:

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

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

harmful

toxic

oxidising

flammable

explosive

corrosive

Recap:

Rocognise substances by  properties, we know 8 different propperties.

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

Homework

Exercises 1 - 8

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