Radioactivity Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Isotopes

A

Atoms of the same element that differ in the number of neutrons in the nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Stable

A

Describes a nucleus that does not change spontaneously. The protons and neutrons in the nucleus are held together strongly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Unstable

A

Describes an atom in which the neutrons and protons in the nucleus are not held together strongly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Radioisotopes

A

A radioactive form of an isotope

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Nuclear radiation

A

Radiation from the nucleus of an atom, consisting of alpha or beta particles, or gamma rays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Alpha particles

A

Positively charged nuclei of helium atoms, consisting of two protons and two neutrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Beta particles

A

Charged particles (positive or negative) with the same size and mass as electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Gamma rays

A

High-energy electromagnetic radiation during nuclear reactions. They have no mass and travel at the speed of light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Half-life

A

Time taken for half the radioactive atoms in a sample to decay- that is, change into atoms of a different element

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Cosmic radiation

A

Naturally occurring background radiation from outer space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly