Chemistry Midterm ACC

Front

What do all atoms of the same element have in common?

Back

All have the same atomic number.

Front

How many electrons are in the n=3 energy level?

Back

18 total.

Front

What is mass in terms of matter?

Back

Mass has matter and never changes.

Front

Which element has the smallest atomic radius in Period 3?

Back

Argon (Ar).

Front

What is the equation that relates speed of light (c) to wavelength and frequency?

Back

c = wavelength x frequency.

Front

What is the definition of atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is an ionic bond?

Back

A chemical bond formed between two ions with opposite charges.

Front

What is the significance of isotopes in chemistry?

Back

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

Front

What is the principle of electron configuration?

Back

Electrons occupy the lowest-energy orbitals available.

Front

What is the relationship between protons and neutrons in an atom?

Back

Protons and neutrons together make up the atomic mass of an element.