Revision quiz

the central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

What number indicates an electron?

• 1
• 2
• 3
• 4

What number indicates the nucleus?

• 1
• 2
• 3
• 4

Oxygen’s atomic number is 8. This means that an oxygen atom must have

• 8 electrons
• 8 protons
• 8 neutrons
• a mass number of 8

Why are gases easier to compress than liquids

• They are less dense

• Their particles are held together less tightly

• Their particles are further apart

• Their particles move randomly

What do carrots, lemonade and air have in common?

• They all have mass and occupy space

• The particles move randomly

• They are composed of identical particles

• They are coloured

What causes particles of matter to move faster?

• Weaker forces between them

• Heating the matter

• Cooling the matter

• Shaking the matter

Consider the diagram. Which label identifies R?

• Evaporation

• Condensation

• Melting

• Freezing

When a gas forms directly from a solid, skipping the liquid phase. it is called

• deposition
• sublimation
• evaporation
• condensation