Radioactive Decay Flashcards
Where was Marie Curie born?
- Poland
- 1867
Where did Marie Curie work
Paris
1903:
Nobel Prize in Physics
1911
Nobel Prize in Chemistry
Curie identified…
- Polonium
- Radium
Nuclear radiation occurs…
when the nucleus of the atom is unstable
Nuclear radiation occurs when the
the nucleus of the atom is unstable
- Something is emitted from the nucleus
- The nucleus has decayed (broken down)
- It is a random process
Which form of nuclear radiation is described
here: 2 protons and 2 neutrons
Alpha
Which form of nuclear radiation is described
here: like a proton, but with no charge
Neutron
Which form of nuclear radiation is described
here: a high-energy electromagnetic wave
Gamma
Which form of nuclear radiation is described
here: a high-energy electron
Beta
Which form of nuclear radiation is
made of the largest particle?
Alpha
There are 4 types of nuclear radiation:
- Alpha
- Beta
- Gamma
- Neutron
Types of radiation
- Alpha
- Beta
- Gamma
What can Alpha go through and not?
Paper: Yes
Plastic: No
Concrete/Steel/Lead: No
What can Beta go through and not?
Paper: Yes
Plastic: Yes
Concrete/Steel/Lead: No
What can Gamma go through?
Paper: Yes
Plastic: Yes
Concrete/Steel/Lead: no
Which form or forms of nuclear radiation are stopped by a sheet of paper?
Alpha
Which form or forms of nuclear radiation are stopped by a few mm of aluminium?
- Alpha
- Beta
Which form or forms of nuclear radiation will penetrate deep into,
and be stopped by thick lead?
Gamma
Thick concrete will protect against
which form or forms of nuclear
radiation?
- Alpha
- Beta
- Gamma
Alpha
2 protons and 2 neutrons
Beta
High-speed electron
Gamma
High-energy electromagnetic wave
Neutron
Neutrally charged particle
Alpha
Just a few centimetres (cm)
Beta
A few meters, depending on it’s speed
Gamma
Tens of thousands of meters
Radioactive Decay
- Some isotopes have an unstable nucleus
- To become stable, the nucleus gives out radiation
