Unit 3 Test Review

Front

What occurs during absorption in electron transitions?

Back

An electron absorbs energy and jumps to the next orbital.

Front

How do you calculate the energy of a photon given its frequency?

Back

Use the formula E = h * f, where E is energy, h is Planck's constant (6.626 x 10^-34 J·s), and f is the frequency.

Front

What is the value of Planck's constant?

Back

Planck's constant is 6.626 x 10^-34 J·s.

Front

How many valence electrons does an atom with an atomic number of 15 have?

Back

5 valence electrons.

Front

What is the relationship between wavelength and frequency in waves?

Back

The speed of a wave is equal to the product of its wavelength and frequency (v = λ * f).

Front

How do you calculate the energy of a wave given its wavelength?

Back

Use the formula E = h * (c / λ), where c is the speed of light (3.00 x 10^8 m/s) and λ is the wavelength.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 3.00 x 10^8 m/s.

Front

What is the formula to convert frequency to energy?

Back

E = h * f.

Front

What happens to an electron when it releases energy?

Back

The electron returns to its ground state and may emit a photon.

Front

What is the energy of a photon with a frequency of 4.26 x 10^18 Hz?

Back

2.82 x 10^-15 J.