Unit 2 Practice Questions 23-24

Front

What is beta decay?

Back

Beta decay is a type of radioactive decay in which a neutron in an atom's nucleus releases an electron and transforms into a proton, resulting in an increase in the atomic number by 1.

Front

What is the atomic number of Sulfur?

Back

The atomic number of Sulfur is 16.

Front

What is the average atomic mass of Boron?

Back

The average atomic mass of Boron is approximately 10.81 amu.

Front

What subatomic particle is located outside of the nucleus?

Back

Electrons are located outside of the nucleus.

Front

Which subatomic particle determines the identity of an atom?

Back

Protons determine the identity of an atom.

Front

Define atomic number.

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the atomic mass and stability of the nucleus but do not affect the atomic number.

Front

What is the charge of an electron?

Back

Electrons have a negative charge.

Front

What is the charge of a proton?

Back

Protons have a positive charge.

Front

What is the charge of a neutron?

Back

Neutrons have no charge (they are neutral).