chem final

Question 1

John dalton

Answer 1

billiards ball, atom are solid spheres

Question 2

What experiment did jj thompson use

Answer 2

Cathode ray tube expiriment

Question 3

JJ thompson

Answer 3

PLum pudding, atoms contain negetive charged electron, positive charged cloud

Question 4

Ernest rutherford

Answer 4

Solar system, Positive charged nucleus

Question 5

who used the gold foil expirmemnt

Answer 5

Ernest Rutherford

Question 6

Neils bohr

Answer 6

Specific energy levels or shells.

Question 7

Who used the atomic line spectra expirement

Answer 7

Neils Bohr

Question 8

Group number equals

Answer 8

Number of valence electrons

Question 9

Cations

Answer 9

positive charge, loss of elecetrons

Question 10

Anions

Answer 10

negative charge, gain of electrons

Question 11

explain which atoms form cations and anions

Answer 11

Metals form cations and non-metals form anions

Question 12

do Molecular compiunds share electrons or gain or loose.

Answer 12

share

Question 13

do you reduce molecular compounds

Answer 13

no

Question 14

non polar

Answer 14

linear and counterbalanced

Question 15

polar

Answer 15

repels

Question 16

chemical change

Answer 16

results in a new substance

Question 17

What is the Law of conservation of energy

Answer 17

Energy cannot be created or destroyed it can be transfered or transfromed

Question 18

endothermic reaction

Answer 18

Energy is absorbed

Question 19

Exothermic

Answer 19

energy is given off