CP_Unit 3 Practice 24-25

Front

What did Rutherford's experiments demonstrate about the atom?

Back

Rutherford's experiments showed that atoms have a nucleus, which is a dense central core containing protons and neutrons.

Front

What is the symbol for Helium-4?

Back

The symbol for Helium-4 is ⁴₂He.

Front

What is the missing isotope in the nuclear equation: ⁹₄Be + ¹₁H → _____ + ⁴₂He?

Back

The missing isotope is ⁶₃Li.

Front

What type of decay is represented by the equation: X → Y + radiation?

Back

This represents gamma emission.

Front

How do you calculate the average atomic mass of an element with multiple isotopes?

Back

Average atomic mass = (abundance of isotope 1 × mass of isotope 1) + (abundance of isotope 2 × mass of isotope 2).

Front

What is alpha decay?

Back

Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (2 protons and 2 neutrons).

Front

What is beta decay?

Back

Beta decay is a type of radioactive decay in which a neutron is transformed into a proton, emitting a beta particle (electron) and an antineutrino.

Front

What is gamma emission?

Back

Gamma emission is the release of gamma rays from a nucleus, often following other types of decay, and does not change the number of protons or neutrons.

Front

What is fission?

Back

Fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts, releasing a large amount of energy.

Front

What is an isotope?

Back

Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.