CHAPTER 2.2 MOLECULES AND CHEMICAL BONDS

Question 1

MOLECULES

Answer 1

A substance made up of two or more atoms.

Question 2

CHEMICAL BOND

Answer 2

Any form of attraction between atoms that holds them together.

Question 3

VALENCE ELECTRONS

Answer 3

The electrons farthest from the nucleus, which are at the highest energy level.

Question 4

MOLECULAR ORBITAL

Answer 4

A merged orbitals traversed by a pair of shared electrons.

Question 5

COVALENT BOND

Answer 5

A chemical bond formed by a shared pair of electrons holding two different atoms together.

Question 6

DOUBLE BOND

Answer 6

A chemical bond in which covalent joined atoms share two pairs of electrons.

Question 7

ELECTRONEGATIVITY

Answer 7

The ability of atoms to attract electrons.

Question 8

POLAR COVALENT BOND

Answer 8

Bonds that do not share electrons equally.

Question 9

NON POLAR COVALENT BOND

Answer 9

A covalent bond between atoms that have the same, or nearly the same, electronegativity.

Question 10

IONIC BOND

Answer 10

A bond in which two ions with opposite charges associate with each other due to their difference in electronegativity.

Question 11

CHEMICAL REACTION

Answer 11

The process by which molecules are transformed into different molecules.

Question 12

REACTANTS

Answer 12

Any of the starting molecules in a chemical reaction.

Question 13

PRODUCTS

Answer 13

Any one of the transformed molecules that result from a chemical reaction.

Question 14

From their positions on the periodic table of elements, can you predict how many lithium atoms and and hydrogen atoms can combine to form a molecule?

Question 15

What are the differences between covalent bonds and polar covalent, hydrogen, and ionic bonds?