1. Which particle is the slowest, and is the most ionising?
- Alpha particles are the fastest and smallest, and the least ionising.
- Beta particles are the slowest, and are the most ionising, they're small too.
- Alpha is big and slow movin', it doesn't penetrate very far into materials. It is strongly ionising, (creates lots of ions). Beta particles move fast and they're small. Gamma particles penetrate far into materials, and are weakly ioonising.
- Gamma particles penetrate far into materials, and are the slowest. They're the most ionising.
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2. Where do radioactive substance give out radiation from? Is it random or regulated?
- From the protons, it's a random process
- From the nucleus, it's a random process
- From the nucleus, it's a regulated process
- From electrons, it's a random process
3. Alpha -->
- 4, 2 He
- 0, -1 He
- 4, 4 He
- 2, 4 He
4. For every beta particle emitted....
- A proton turns to a neutron in the nucleus. With a charge of -1
- An electron turns to a proton in the nucleus. With a charge of -1
- A neutron turns to a proton in the nucleus. With a charge of -1
- A neutron turns to a electron in the nucleus. With a charge of +1
5. If isotopes are radioactive, what does that mean?
- It means it gives out radioactive decay
- It has a half-life
- It means it decays into other elements and gives out radiation
- It means it grows into new elements