2.1 Vocab

Question 1

Atom

Answer 1

The basic Unit of matter

Question 2

Nucleus

Answer 2

The center of the atom where strong forces bind protons and neutrons together

Question 3

Electron

Answer 3

negatively charged particle with only 1/1840 the mass of a proton

Question 4

Element

Answer 4

a pure substance that consists entirely of one type of atom

Question 5

Isotope

Answer 5

Atoms of the same element that differ in the number of neutrons.

Question 6

Compound

Answer 6

a substance formed by the chemical combination of two or more elements in definite proportions

Question 7

Ionic Bond

Answer 7

is formed when one or more electrons are transferred from one atom to another.

Question 8

Ion

Answer 8

The positively and negatively charged atoms are known as ions

Question 9

Covalent Bond

Answer 9

formed by moving electrons that actually travel about the nuclei of both atoms

Question 10

Molecule

Answer 10

the structure that results when atoms are joined together by covalent bonds

Question 11

Van Der Waals Forces

Answer 11

slight attraction that develops between oppositely charged regions of nearby molecules