chemistry- atomic theory

Question 1

Matter has

Answer 1

mass and volume

Question 2

Atoms are made up of

Answer 2

sub atomic particles
neutrons 1 Au
protons almost 1 Au
electrons 1/1837 Au

Question 3

Define: Compound

Answer 3

a pure substance made up of two or more elements

Question 4

Isotopes are

Answer 4

a form of element with a different number of neutrons than protons

Question 5

number of neutrons =

Answer 5

atomic mass - atomic number

Question 6

Ions are formed when

Answer 6

atoms gain or lose electrons
want a full or empty valence shell

negative ions gained electrons
positive ions lost electrons

Question 7

Number of electrons is:

Answer 7

atomic number - ion charge

Question 8

Compound vs molecule

Answer 8

compound is two or more elements bonded together and molecule is two or more atoms bonded together

Question 9

Covalent bonds are

Answer 9

non metals that share electrons

Question 10

Ammonia formula

Methane formula

Answer 10

NH3

CH4

Question 11

Diatomic

Answer 11

Hydrogen Nitrogen Oxygen and all halogens (Fluorine Chlorine Bromine Iodide

Question 12

Most reactive metals are located where on the periodic table?

Answer 12

bottom left

Question 13

What does Atomic Number tell you

Answer 13

the amount of protons found in that element

if it is uncharged then it tells you the number of electrons in that element

Question 14

What does Atomic Mass tell you

Answer 14

average of naturally occurring isotopes in an element

p + n