Particles and radiation

What you'll learn

1. 1

   Imagine a tiny ball of playdough — that's like an atom. Now pinch off a tiny crumb — that's a particle of radiation!

2. 2

   What do we call the tiny bits that come out of atoms?

3. 3

   Drag the alpha particle (⍺) from the nucleus — it's made of 2 protons and 2 neutrons, like a tiny helium nucleus!

4. 4

   Let's see how an alpha particle is written in symbols.

5. 5

   How many protons are in an alpha particle?

6. 6

   Here's a beta particle (β⁻) — it's a fast-moving electron from inside the nucleus!

7. 7

   What type of particle is a beta particle?