RW In class Chemistry A CP Test 3 Review

Front

What is the number of neutrons in an atom of the isotope Neon-22?

Back

12

Front

Order the following elements by increasing ionization energy: Neon (Ne), Lithium (Li), Carbon (C).

Back

Li < C < Ne

Front

What do isotopes of carbon have in common?

Back

They have the same atomic number.

Front

What is an example of a chemical change?

Back

Burning a piece of paper.

Front

What is the noble gas configuration for Cobalt?

Back

[Ar] 4s² 3d⁷.

Front

Define ionization energy.

Back

The energy required to remove an electron from an atom or ion.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What distinguishes isotopes of an element?

Back

Isotopes have the same number of protons but different numbers of neutrons.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.