Atoms and Ions

Question 1

Elements

Answer 1

substances made of one type of atom

Question 2

molecular elements

Answer 2

elements made from non-metals

Question 3

metallic elements

Answer 3

elements made from metals

Question 4

monoatomic elements

Answer 4

noble gases

Question 5

compounds

Answer 5

substances containing DIFFERENT types of atoms in FIXED ratios

Question 6

molecules

Answer 6

substances made of two or more non-metal atoms

Question 7

atomic number

Answer 7

number of protons

Question 8

mass number

Answer 8

protons + neutrons

Question 9

isotopes

Answer 9

atoms that have the same number of protons but a different number of neutrons

Question 10

valence electrons

Answer 10

electrons on the OUTER SHELL

Question 11

octet rule

Answer 11

the maximum number of electrons in the valence shell is 8

Question 12

excited state (atom)

Answer 12

when an atom is subjected to a high energy and the electrons absorb the energy and jump up to higher energy levels (shells)

Question 13

cation

Answer 13

positively charged ions

Question 14

anion

Answer 14

negatively charged ions

Question 15

monoatomic ions

Answer 15

single atom ions

Question 16

polyatomic ions

Answer 16

generally have negative charge, contains more than one atom

Question 17

rows are..

Answer 17

called periods, every period you go down, the amount of shells increase by 1 (goes side ways)

Question 18

columns are..

Answer 18

are called groups, every group you go across, the amount of valence electrons increase by 1 (goes down)

Question 19

octet rule

Answer 19

1. fill 3rd shell until 8
2. if extras put 2 into the fourth shell
3. come back and fill the 3rd shell (max 18)

Question 20

when an atom is at a ground state it is..?

Answer 20

stable