Chemistry Q2 Review

Front

What is the most dangerous type of radiation?

Back

Gamma ray

Front

What type of decay is represented by the equation 238U ---> 234Th + 4He?

Back

Alpha decay

Front

What is the formula for barium sulfide?

Back

BaS

Front

Which wave has the highest frequency?

Back

Wave C

Front

What are isotopes?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the charge of an alpha particle?

Back

+2

Front

What is the difference between alpha, beta, and gamma radiation?

Back

Alpha radiation consists of helium nuclei, beta radiation consists of electrons or positrons, and gamma radiation consists of high-energy photons.

Front

What is the significance of the atomic number?

Back

It determines the identity of an element and the number of protons in the nucleus.

Front

What is the relationship between frequency and wavelength?

Back

They are inversely related; as frequency increases, wavelength decreases.

Front

What is a half-life in radioactive decay?

Back

The time required for half of the radioactive atoms in a sample to decay.