definitions

Question 1

physical property

Answer 1

describes the characteristics of a substance

Question 2

chemical property

Answer 2

describes how a substance interacts or reacts with other substances to form a new product

Question 3

proton

Answer 3

located in the nucleus

Question 4

neutron

Answer 4

the result of the atomic number subtracted by the atomic mass. also found in the nucleus

Question 5

who was the bohr rutherford diagram created by

Answer 5

neils bohr and ernest rutherford

Question 6

alkali metals

Answer 6

(except hydrogen) very reactive; first group

Question 7

alkaline earth metals

Answer 7

reactive; second group

Question 8

halogens

Answer 8

very reactive; group 17

Question 9

noble gases

Answer 9

stable and unreactive; last row

Question 10

valence electrons

Answer 10

the electrons on the outermost shell/orbit

Question 11

ionic compounds

Answer 11

made up of positive and negative ions

Question 12

polyatomic ions

Answer 12

a group of atoms that form a unit and have one overall charge

Question 13

covalent bond

Answer 13

a bond that results from the sharing of valence electrons between non-metal atoms

Question 14

molecule

Answer 14

a particle in which atoms are joined by covalent bonds