Chemistry review

Question 1

Electron affinity

Answer 1

The change in energy when an electron is added to a neutral atom to form an anion. Measures how strongly an atom attracts other electrons.

Question 2

Electron dot notation

Answer 2

Dots that represent valence electrons are placed around the element’s symbol.

Question 3

Atomic number

Answer 3

denoted as Z; equal to the number of protons in an atom of that element.

Question 4

Anion

Answer 4

Atom with a negative charge; gain electrons

Question 5

Atomic radius

Answer 5

The distance from the center of an atom’s nucleus to its outermost electron.

Question 6

Binary acid

Answer 6

An acid containing hydrogen and a nonmetal.

Question 7

Cation

Answer 7

loses electrons; positive charge

Question 8

Electronegativity

Answer 8

measure of attraction between the nucleus of an atom and shared electrons in chemical bonds.

Question 9

Hydrate

Answer 9

compounds that hold a certain amount of water within their crystalline structures

Question 10

Ionization energy

Answer 10

the amount of energy required to remove an electron from an atom

Question 11

Mass