Chemistry Test Review (24-25)

Front

What is the atomic structure of a neutral atom of magnesium-26?

Back

12 protons, 14 neutrons, 12 electrons.

Front

What is the Bohr model of an atom?

Back

A diagram that shows the arrangement of electrons in energy levels around the nucleus.

Front

Which element has the same number of energy levels as Calcium?

Back

Nickel.

Front

What is the chemical formula for 3 Hydrogen, 1 Sulfur, and 4 Oxygen?

Back

H₃SO₄.

Front

What happens when an atom loses a valence electron?

Back

It becomes a positive ion.

Front

Define an isotope.

Back

Atoms of the same element with different numbers of neutrons.

Front

What is a valence electron?

Back

An electron in the outermost shell of an atom that can participate in chemical bonding.

Front

What is the significance of protons in an atom?

Back

Protons determine the atomic number and identity of an element.

Front

What is the difference between a cation and an anion?

Back

A cation is a positively charged ion, while an anion is a negatively charged ion.

Front

What is the formula for calculating the number of neutrons in an atom?

Back

Number of neutrons = Atomic mass - Atomic number.