Radioactivity and Ionsisng Radiation Flashcards Preview

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Flashcards in Radioactivity and Ionsisng Radiation Deck (13):
1

Fill in the gap:
In an atom, the number of ________ is _____ to the number of electrons

1. Protons
2. Equal

2

What is positron radiation?

Positively charged beta radiation

3

Fill in the gap:
Positron and electrons are ________________

1. Antiparticles

4

When does B- decay occur?

When there are too many neutrons

5

When does B+ decay occur?

When there are too few neutrons

6

Where does alpha decay happen?

In a heavy nucleus

7

When is gamma radiation emitted?

When nuclei have too much energy

8

What is the composition of quarks in a proton?

Two up one down

9

What is the composition of quarks in a neutron?

Two down one up

10

What is the composition of quarks in an electron?

Three down

11

What does PET scanning aid?

The diagnosis of illness

12

What are two harmful effects of radiation?

1.Tissue damage
2.Possible mutations

13

Fill in the gap:
Radiation can be used ______ and externally to treat tumours

1. Internally