2.1 substances in the home

• Natuurkunde
• Middelbare school
• vwo
• Leerjaar 2

start questions

take a minute to think about these questions:

- Why isn't your bike frame made of rubber?

- Why do you choose a certain pizza toppings?

- How do you choose your nail polish?

WELCOME!

grab:

-book

-notebook

-laptop

-pen

2.1 substances in the home

planning en doelen

After today, you will be able to:

- Recognize and name substance

properties.

- Explain how a substance can be

hazardous.

- Describe the meaning of hazard symbols.

- Explain the difference between H and P statements.

startup	10 min
substances and properties	10 min
dangers	5 min
practice	10 min
H and P statements	5 min
closing remarks	5 min

substances and properties

In physics, substances mean:

The matter that makes up everything around you.

These substances have properties. Substance properties are:

A property that a substance has, such as color, taste, or flammability.

You cannot change a substance property.

dangerous substances

A substance can be hazardous in various ways, for example, to you, the environment, or in combination with another substance.

Substances you can buy that are hazardous have a warning on the packaging with hazard symbols, P-phrases, and H-phrases.

dangerous

substances

Some substances are dangerous; for example, they can make you sick, cause a fire, or cause an explosion.

Hazard symbols are used to indicate the danger posed by certain substances.

These are images (pictograms) that indicate the hazards you should be aware of.

practice time

grab your laptop

substance property or not?

property

not a property

inflamable

colour

Temperature

phase

Mass

shape

Density

melting point

Volume

Tekst

Pictogrammen

corrosive

toxic

explosive

environmentally dangerous

harmful, irritant

inflamable

Drag the substance to the substance property

nice smell

strong

light

see through

elastic

sweet

acidic

inflamable

rubber

glass

soap

steel

vinegar

alluminium

sugar

wood

practice time

What? Do assignments 2 and 3.

Where? On page 39.

Time? 3 min.

Help? Not available. Need help? Read page 37 again.

Done? Well done! Do assignment 5.

H and P

statements

H-statements: Indicates the hazards you should be aware of.

P-statements: Indicates the precautions you should take.

closing remarks

- Name three properties of water.

- What does this symbol mean?

- What is a P-phrase?

homework

Huiswerk basic:

2, 3, 4, 7

Extra practice:

1, 6

Extra challenge:

5, 8, 9