Atoms and Radiation 1 Flashcards
What are the three subatomic particles?
Protons and neutrons (inside the nucleus) and electrons orbiting around the nucleus.
What is an isotope?
Isotopes have the same number of protons but different numbers of neutrons.
Isotopes have the same number of protons but different numbers of neutrons.
An early model of the atom where the atom is a ball of positive charge with negative electrons embedded in it.
What was the experiment that disproved the plum pudding model?
The gold foil experiment
Who discovered the neutron?
James Chadwick.
What are alpha particles made of?
Two protons, and two neutrons
What are beta particles made of?
A high velocity electron
What is gamma radiation made of?
An electromagnetic wave
What is ionisation?
When an atom loses, or gains an electron
Why is radiation dangerous?
Can cause bodies cell/nucleus/ to be ionised which can cause mutations within the cell leading to tumors/cancers
What do we use to detect radiation?
Geiger-Muller tube/counter
