STATE OF MATTER

​PARTICLES

​how to study the particles?

Labelling

complete the diagram by writing the names of the changes of state A, B, C and D

Drag labels to their correct position on the image

melting

freezing

boiling

sublimation

deposition

condensation

Multiple Choice

what is the change of state called?

• melting

• freezing

• sublimation

• deposition

• condensation

Match

Match the following

• which substances are gaseous at room temperature?

• which substances are liquid at room temperature?

• which substances are solid at room temperature?

• which substances are liquid at -10 oC?

• which substances are liquid at 150 oC?

oxygen only

mercury, ethanol, water

sodium, salt, iron, diamond

mercury and ethanol

sodium

• oxygen only

• mercury, ethanol, water

• sodium, salt, iron, diamond

• mercury and ethanol

• sodium

Multiple Select

which statements below describe the solid?

• particles are arranged in lattice

• strong forces hold the particles together

• particles are sliding each other

• weak forces hold the particles together

• small movement of particles such as tiny vibration

Match

Match the following

characteristic in liquid

• arrangement

• speed of particles

• forces of attraction

• movement

particles are close each other but not in lattice

particles can move about in average speed

less strong compared to solid

slide to each other

• particles are close each other but not in lattice

• particles can move about in average speed

• less strong compared to solid

• slide to each other

Match

Match the following

characteristic in gas

• arrangement

• speed of particles

• forces of attraction

• movement

particles are very far apart

particles move very fast

almost no forces holding particles together

quick moving

• particles are very far apart

• particles move very fast

• almost no forces holding particles together

• quick moving

Reorder

Reorder what happens when melting

• particles in solid absorb energy

• as there is energy intake, particles vibrate more vigorously

• particles will expand

• at its melting point, force of attraction will be broken

• particles will start sliding over each other

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Multiple Select

which statements describe the boiling process?

• particles will collide more often and bounces further apart

• energy is taken in to break the force of attraction between particles

• liquid particles expand

• particles keep sliding over each other

• particles will start moving vigorously

Open Ended

compare evaporation and boiling in 3-5 sentences

Reorder

Reorder what happens when freezing

• particles in solid releases energy

• as there is energy loss, particles move slower

• particles will get closer to each other

• particles start to bond to each other on its freezing point

1

2

3

4

• 1
• 2
• 3
• 4

Reorder

Reorder what happens when condensation

• particles in solid releases energy

• as there is energy loss, particles move slower

• particles will get closer to each other

• particles start to bond to each other on its condensation point

1

2

3

4

• 1
• 2
• 3
• 4

Multiple Choice

what is the freezing point of the substance?

• 200oC

• 150oC

• 100oC

• 50oC

Multiple Choice

what best explains from B to C?

• Water vapour loss energy, change the gas into liquid

• Water vapour gain energy, change the gas into liquid

• Water vapour gain energy, change the liquid into gas

• Water vapour loss energy, change the liquid into gas

closer look about the gas

Multiple Choice

Which of the following best defines gas pressure?

• The amount of heat energy a gas absorbs in a given volume.

• The force exerted by gas particles per unit area on the walls of a container.

• The volume occupied by a gas in a sealed container.

• The temperature of a gas in relation to its kinetic energy.

Multiple Select

what happens when temperature of the gas increases? (tick all of the correct statement)

• more gas pressure

• particles move vigorously

• volume of gas increases

• volume of gas decreases

Multiple Choice

what happens when pressure is increased?

• Density increases and volume decreases.
• Density decreases and volume increases.
• Temperature decreases and volume increases.
• Volume increases and density decreases.

Multiple Choice

Hydrogen sulfide, H₂S, and hydrogen chloride, HCl, are both gases at temperatures above –50 °C.

Which gas will diffuse most rapidly at the temperature given?

• hydrogen chloride at –40 °C

• hydrogen chloride at –20 °C

• hydrogen sulfide at –40 °C

• hydrogen sulfide at –20 °C

Multiple Choice

which of the following statement is correct related to rate of diffusion of gas?

• Lighter gases diffuse faster than heavier gases.
• Diffusion rate is solely determined by the color of the gas.
• The rate of diffusion is not affected by the weight of the gas.
• Heavier gases diffuse faster than lighter gases.