Chem Vocab

Question 1

Element

Answer 1

The most basic pure substance; it can’t be broken down into anything smaller

Question 2

Atom

Answer 2

The smallest particle of an element

Question 3

Proton

Answer 3

The positive subatomic particle; found in the nucleus

Question 4

Neutron

Answer 4

The neutral subatomic; found in the nucleus

Question 5

Electron

Answer 5

The negative subatomic particle; found outside the nucleus

Question 6

Isotope

Answer 6

A form of an element that has a different number of neutrons

Question 7

Ion

Answer 7

An atom that has a charge due to the change in number of electrons

Question 8

Cation

Answer 8

A positive ion

Question 9

Anion

Answer 9

A negative ion; formed by gaining electrons

Question 10

Average Atomic Mass

Answer 10

A weighted average of all the isotopes of an element

Question 11

Atomic Radius

Answer 11

The length from the center of the nucleus to the valance shell

Question 12

Ionization energy

Answer 12

The energy needed to remove an electron from an atom

Question 13

Electronegativity

Answer 13

The ability of an atom to attract electrons

Question 14

Electron Configuration

Answer 14

Shows the arrangement of electrons in energy levels, sublevels, and orbital

Question 15

Atomic #

Answer 15

The number of protons in an atom

Question 16

Mass number

Answer 16

The number of protons AND NEUTRONS in an atom