Unit 4 Test A

Front

What is the Stock System of Nomenclature?

Back

A system used for naming compounds containing metals that can form more than one type of ion, where the oxidation number is indicated as a Roman numeral in parentheses.

Front

Which type of elements typically require a Roman numeral in their names?

Back

Transition elements.

Front

What happens to an atom when it loses an electron?

Back

It becomes positively charged.

Front

What charge does a metal from group 2 typically have?

Back

2+.

Front

What is the result when atoms combine?

Back

They are more stable.

Front

What is a neutral group of atoms held together by covalent bonds called?

Back

Molecules.

Front

What are valence electrons?

Back

Electrons of the atoms that participate in chemical bonding.

Front

What is the octet rule?

Back

Atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.

Front

What is an ion?

Back

An atom that has gained or lost electrons, resulting in a positive or negative charge.

Front

What is the difference between cations and anions?

Back

Cations are positively charged ions (lost electrons), while anions are negatively charged ions (gained electrons).