Chem ch 13

Does an alpha particle lose energy quickly during interaction?

Yes.

Can an alpha particle be stopped easily?

Yes, it can be stopped easily by a few pieces of paper due to its large mass and double positive charge.

In which direction does an alpha particle go in a magnetic field?

To the north pole or negative pole.

Which of the following particles has more penetrating force, Alpha or Beta?

Beta, which can penetrate deeply into skin.

In which direction is a beta particle deflected in a magnetic field?

The positive pole or South Pole.

What is a positron?

A type of B+ Radiation that occurs when protons are greater than neutrons.

What is gamma radiation?

The loss of energy from the nucleus that usually accompanies other types of decay.

What is electron capture?

When an inner orbital electron is captured by the nucleus of its own atom; it combines with a proton to form a new neutron.

How many reactants does an electron capture have?

Two reactants.

What are the stages of the electromagnetic spectrum from longest wavelength and lowest frequency to shortest wavelength and highest frequency?

T.V., Radio waves, radar, microwaves, infrared, ROYGBIV, visible light, ultraviolet rays, and X-Rays.

What is a crest?

The peak of a wave.

What is a trough?

The lowest point of a wave.

What is a wavelength?

The space between one crest to another crest.

What is an amplitude?

The height of a wave from its trough to its crest.

What is transmutation?

The change of one element to a different element.

What are the two types of transmutation?

Natural and artificial.

What is natural transmutation?

Unstable nuclei undergo spontaneous decay.

What is artificial transmutation?

Bombardment of nucleus with other particles.

What is the strong nuclear force?

A very sensitive distance of attractions between nucleons.

What nuclei’s presence helps hold the nucleus together?

The neutron.

Why is the nucleus less effective in holding nucleons together in large nuclei?

Because the neutrons are far apart.

What is a half-life?

The amount of time it takes for half a nucleus to change into a different element.

Is the half-life affected by heat, radiation, or any external force?

No.

What does Rad stand for?

Radiation Absorbed Dose.

What is a Rad?

A unit of absorbed energy.

What are some uses for Radiation/Radioactivity?

Treatment of disease, diagnoses of disease, study of chemical reactions, to follow chemical pathways, energy source, and carbon dating.