Radiation and Decay - Cognito video

What are isotopes?

• Forms of an element with the same number of protons but different numbers of neutrons

• Forms of an element with different numbers of protons and neutrons

• Forms of an element with the same number of neutrons but different numbers of protons

• Forms of an element with the same number of protons and neutrons

What is the charge of alpha particles?

• +2

• 0

• -1

• +1

Which type of radiation is made up of two protons and two neutrons?

• Alpha particles

• Beta particles

• Gamma rays

• Neutrons

How far can alpha particles travel in the air?

• A few centimeters

• Several meters

• Several kilometers

• A few millimeters

What is the charge of beta particles?

• -1

• +1

• 0

• +2

What happens when a neutron decays?

• It turns into a proton and an electron

• It turns into two protons

• It turns into two electrons

• It turns into a proton and a neutron

What type of radiation is described as waves of electromagnetic radiation?

• Gamma rays

• Alpha particles

• Beta particles

• Neutrons

What is the main reason a nucleus emits a neutron?

• To increase stability

• To decrease mass

• To increase charge

• To decrease energy

What is the nuclear symbol for alpha particles?

• He

• Ne

• Ar

• Kr

What is the main reason gamma rays can penetrate far into materials?

• They have no mass or charge

• They have a strong charge

• They are very large

• They are very slow