O Chem Lab-Lab 2 Nuclear Radiation 2

Gamma rays and visible light are both BLANK but gamma rays have BLANK than visible light.

Electromagnetic radiation, more energy

Identify the correct descriptions of alpha particles.

• Alpha particles are more massive than beta particles.

• An alpha particle is a form of electromagnetic radiation.

• An alpha particle is a helium nucleus.

• An alpha particle has a negative charge.

Alpha particles are more massive than beta particles
An alpha particle is a helium nucleus

Identify the correct descriptions of beta particles.

Select one or more:

• A beta particle contains neutrons.

• A beta particle is less massive than a gamma ray.

• A beta particle has a negative charge.

• A beta particle is a high-energy electron.

A beta particle has a negative charge

A beta particle is a high-energy electron

The radiation given off by a radioactive source can be measured with BLANK. The weak radiation should be recorded in units of BLANK because the lab sources are extremely low on the BLANK scale. Radiation is a random event so it is best to make each measurement BLANK.

A Geiger counter, counters per minute, curie scale, multiple times.

Identify the factors that affect the intensity of radiation detected from a radioactive source.

Select one or more:

• Type of emission from the source

  Type of materials between the source and the detector

• Distance of the detector from the source

• The color of the source

Type of emission from the source

Type of materials between source and the detector

Distance of the detector form the source

Complete the sentences by identifying the correct missing words.

Alpha and beta particles originate from the BLANK. Protection from radiation is necessary because if radiation passes through the body it can damage BLANK. Exposure to radiation can be limited by increasing the BLANK from the radioactive source.

nucleus, cells, distance

Which of the following represents an alpha particle?

A:   2/4He

B: −1^0e

C: 0/0γ

Select one:

A