Particle model and atomic structure (trilogy)

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL
• 7 g/cm³
• 28 g/cm³
• 1/7 g/cm³

Frank has a paper clip. It has a mass of 9g and a volume of 3cm³. What is its density?

• 3 g/cm³
• 1/3 g/cm³
• 27 g/cm³
• 39 g/cm³

How do you find the volume of an irregular object (such as a pebble)?

• Using a balance

• Using a stop watch

• height x width x length

• Using a Eureka can

How do you find the volume of a regular object (such as a plastic cube)?

• Using a balance

• Using a stop watch

• height x width x length

• Using a Eureka can

How do you find the mass of an object (such as a pebble)?

• Using a balance

• Using a stop watch

• Using a ruler

In what state are these particles?

• Solid

• Liquid

• Gas

What change of state is occurring when a solid turns into a gas?

• Freezing

• Sublimation

• Boiling

• Melting

What change of state is occurring when a gas turns into a liquid?

• Freezing

• Condensing

• Sublimation

• Boiling

The diagram shows a heating curve. What is happening between B and C?

• Melting

• Evaporating

• Condensing

• Freezing

The diagram shows a heating curve. What is happening between D and E?

• Melting

• Evaporating

• Condensing

• Freezing