HChem 1st Semester Exam Review - 6

Front

What is the shape of an s orbital?

Back

The s orbital is shaped like a sphere.

Front

How do you calculate the distance a radio wave travels?

Back

Distance = Speed × Time. For a radio wave traveling at 3 x 10^8 m/s for 0.250 s, the distance is 7.50 × 10^7 m.

Front

What is the formula to find the frequency of light?

Back

Frequency (f) = Speed of light (c) / Wavelength (λ). For a wavelength of 600 nm, f = 3 x 10^8 m/s / 600 x 10^-9 m = 5 x 10^14 Hz.

Front

Which sublevel has the lowest energy: 4s, 3d, 4p, or 5s?

Back

The 4s sublevel has the lowest energy.

Front

What happens to ionization energy as you move down a group in the periodic table?

Back

Ionization energy decreases because adding more energy levels makes the valence electrons further from the nucleus, making them easier to remove.

Front

Define ionization energy.

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state.

Front

What is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as wavelength increases, frequency decreases, and vice versa.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 3 x 10^8 m/s.

Front

What is a p orbital?

Back

A p orbital is shaped like a dumbbell and can hold a maximum of 6 electrons.

Front

What is the maximum number of electrons in a d orbital?

Back

A d orbital can hold a maximum of 10 electrons.