3E Chemistry dalton task 1A

• Scheikunde
• Middelbare school
• havo, vwo
• Leerjaar 3

3E Chemistry

2-week task 1A about paragraphs 1.1 utai 1.3:

• density
  
• substance properties
• particle model (molecule model)
• phase triangle
• pure substances / mixtures
• classification of liquid mixtures

Convertion between units

You must be able to convert well

according to the diagrams below.

Try to think logically if

you just don't remember.

8,15 kg = 

8,15 g = 

8,15 mL = 

8,15 m³ = 

8,15 dm³  = 

Drag the answers to the correct box:

wrong answers

8150 g

8150000 cm³ 

8150 L

0,00815 kg

8,15 L

815 g

0,815 kg

0,00815 g

0,00815 L

Density

The amount of a substance can be expressed with volume (the dimensions, how much space does the substance take up) and with mass (how heavy is the substance).

This amount of mass per unit volume (e.g. g/ml or g/m³ or kg/dm³) is called the density of a substance.

How do you calculate the mass?
m = ...

1. V / ρ
2. ρ / V
3. ρ · V

TOA-Tim has filled a balloon with 4.50 liters of chlorine gas. The density of chlorine gas is 3.21 g/L. What is the mass of the chlorine gas?

1. 4,50 grams
2. 0,71 grams
3. 1,40 grams
4. 14,4 grams

The volume of a stone of 18 grams is determined using the immersion method.
Calculate the density of the stone.

1. 0,5 g/mL
2. 2 g/mL
3. 9 g/mL
4. 18 g/mL

Calculate the density in g/mL
Write your answer to 1 decimal place and don't forget to type the unit.

The gold medal (right) has a volume of 20.0 cm³. The density of gold is 19.3 kg/dm³. Calculate the mass in grams.
Write your answer to 1 decimal place and don't forget to type the unit.

Put in the correct box

a substance property

not a substance property

colour

smell

melting point

boiling point

mass

flammability

density

phase

solubility in water

taste

shape

temperature

all substances are made up of 

these consist

of 

. The particles that make up the substance 

determine the

of the substance.

Pure substances consist of 

molecules. 

Mixtures consist of 

molecules. 

substance properties

atoms

multiple types of

molecules

one type of

Drag the phase and phase transition to the right place.

Melting

Solidification

Condensationen

Sublimation

Deposition

Evaporation

gas

liquid

solid

When particles start moving faster,

1. the particles move further apart
2. the particles move closer together
3. the particles will stick togethe
4. some particles fall apart

According to the particle model, what happens to the molecules during evaporation?

1. they start moving more slowly
2. they let each other go
3. they get bigger
4. they start to vibrate in place

Gases always have a much lower density than liquids.
You can explain this using the particle model.

Which statement is correct?

1. The gas molecules are enormously expanded and therefore take up a much larger space.
2. Gas molecules are much lighter than liquid molecules.
3. The volume of a gas is much larger than that of a liquid.
4. In the gas phase the molecules are much further apart than in the liquid phase.

Drag the texts to the correct or incorrect boxes.

Correct

Incorrect

Molecules exist in all three phases: solid, liquid and gaseous phase.

In the solid phase, molecules vibrate in place.

During a separation, the molecules change.

During a separation method you sort the substances in the mixture.

When two substances dissolve, a new substance is created, so this is a chemical reaction.

During a phase transition, the velocity of the molecules increases.

when a substance heats up ...

When a substance gets colder ...

This can be explained with the particle model. When a substance becomes warmer, the particles ...

This can be explained with the particle model. When a substance becomes colder, the particles ...

When it gets very cold, the particles stop moving at all. This happens at a temperature of ...

We call this temperature ...

T = 0 K

move faster

move more slowly

it expands

it shrinks

T = -273 °C

absolute zero

Solution

Suspension

Emulsion

Clear

Cloudy

Apple juice

Heterogeneous

Tap water

Milk

Cloudy

Heterogeneous

Filter

Cola

Mayonnaise

Homogeneous

Suspension

Emulsion

Solution

Type of mixture

Example

Solid that does not dissolve in a liquid

Liquid that does not dissolve in a liquid

Solid or liquid that dissolves in a liquid

Chalk in water

Sugar in water

Mayonnaise

Mixture

Pure substance

Boiling point

Melting point

Boiling range

Melting range

Mixtures

TOA-Tim does an experiment with four substances to see whether they dissolve in water or not. The results are shown in the table below.

Solution

Suspension

Emulsion

Drag the name of the mixture type to the correct test tube.

Suspensionn

Solution

Emulsion