Chemistry Test- Chapter 7 (Chemical Bonds)

Front

Hydrogen needs _____ electrons in its valence shell to be stable.

Back

2

Front

How many valence electrons does Carbon have?

Back

4

Front

Which of the following is NOT an ionic bond? (NH3, KCl, K3N, NaCl)

Back

NH3

Front

Which of the following represents a nonpolar covalent molecule? (NaCl, HCN, Br2, Au)

Back

HCN

Front

What is the correct structure for BF3?

Back

Option A.

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

Define ionic bond.

Back

A chemical bond formed between two ions with opposite charges.

Front

What is a covalent bond?

Back

A chemical bond formed when two atoms share one or more pairs of electrons.

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 a polar covalent bond?

Back

A type of covalent bond where electrons are shared unequally between atoms.