Physics - Atomic Structure

State what happens when electrons move to a higher orbit. (1)

The atom has absorbed electromagnetic radiation.

State what happens when electrons move to a lower orbit. (1)

The atom has emitted electromagnetic radiation.

What could happen if an electron gains enough energy? (2)

● Can leave the atom

● To form a positive ion

How does activity affect the rate of decay? (2)

● A sample with high activity

● Has a fast rate of decay

Name the 4 forms of decay. (4)

● Alpha (a helium nucleus)

● Beta Minus (electron)

● Gamma (electromagnetic radiation)

● Neutrons

What does alpha decay cause? (4)

● Mass of nucleus decreases

● Charge of nucleus decreases

What does beta decay cause? (4)

● Mass of nucleus stays unchanged

● Charge of the nucleus increases

What does gamma decay cause? (2)

● Does not cause the mass or charge to change