State the definition of radioactive contamination.
State what affects the level of hazard from contamination.
What is the half-life of a radioactive isotope?
What piece of equipment is used to determine the mass of an object in the laboratory
Use the graph on the powerpoint to determine the half-life of a radioactive source.
Challenge: Explain why the process of beta decay increases an atoms atomic number.
Which state of matter is typically the most dense?
Which state of matter is typically the least dense?
What is the definition of density?
What is the particle model used to describe?
Describe the arrangement of particles in a gas
Describe the arrangement of particles in a liquid
Describe the arrangement of particles in a solid
What is density?
What is the equation for density?
What is the particle model used to describe?
Describe the arrangement of particles in a gas
Describe the arrangement of particles in a liquid
Describe the arrangement of particles in a solid
What is density?
What is the equation for density?
State the equation to calculate density.
Which state of matter has particles furthest apart?
Which state of matter has particles vibrating around a fixed position?
As well as different states of matter, what does the particle model describe?
In which state of matter can particles slide over each other?
Use the particle model to sketch a solid and a gas
Use your diagram to explain why a solid is more dense than a gas for the same material.
Use the particle model to sketch a liquid and a gas.
Use this diagram to explain why a liquid is more dense than a gas for the same material
A mass of a gas and a solid are the same. Explain, using the particle model, which occupies a larger volume.
The helium in the balloon has a mass of 2.54 g.
The balloon has a volume of 0.0141 m3.
Calculate the density of helium to 3 significant figures
A 4.0 cm3 ice cube has a mass of 3.7 g.
Calculate the density of ice.
Write the equation for density
Rearrange the equation for density to make mass the subject
Rearrange the equation for density to make volume the subject
State the units for density
State the units for volume
State the units for mass.