What force keeps electrons in orbit around the nucleus?

• Electrostatic attraction

• Gravity

• Magnetic repulsion

• Magnetic attraction

What piece of equipment is used to detect ionising radiation?

• Balance

• Geiger counter

• Ammeter

• Voltmeter

What can ionisation of DNA molecules lead to?

• Huntington's disease

• Down syndrome

• Cancerous tumours

• Diabetes

What type of particle did Ernest Rutherford fire at a thin sheet of gold foil?

• Alpha particles

• Beta particles

• Gamma rays

• Cathode rays

How are the elements ordered in the periodic table?

• By increasing atomic mass

• By increasing atomic number

• Alphabetically

• By increasing number of neutrons

What are the constituents of beta particles?

• Electromagnetic waves

• Neutrons

• 2 protons and 2 neutrons

• Electrons

What is transmutation?

• When one isotope undergoes radioactive decay

• When one element turns into another

• When one element loses electrons

• When one element loses neutrons

Put these types of nuclear radiation in order of ionising power, from most ionising to least ionising.

• Alpha, beta, gamma

• Alpha, gamma, beta

• Beta, alpha, gamma

• Gamma, beta, alpha

Which element contains no neutrons in its most common isotope?

• Nitrogen

• Helium

• Neon

• Hydrogen

How does the atomic number and mass number change in alpha decay?

• Atomic number increases by 2; mass number increases by 4

• Atomic number decreases by 4; mass number decreases by 2

• Atomic number increases by 4; mass number increases by 2

• Atomic number decreases by 2; mass number decreases by 4