periodic table test science

Question 1

rutherford

Answer 1

tested thomsons model by bombarding gold foil with positive particles

Question 2

metaloloids

Answer 2

borders the staircasehas both metals and non metals

Question 3

dalton

Answer 3

billard ball model revised democritus theory

Question 4

transition metals

Answer 4

middle section

Question 5

halogens

Answer 5

group 17
most reavtive non metal group combining easliy with alkali metals

Question 6

noble gases

Answer 6

group 18
unreactive do not combine with any other elements because there already stable
coulorless and odorless,tasteless

Question 7

hydrogen

Answer 7

group of 1
non metal
odorless tasteless coulorless
highley flamable

Question 8

alkali metals

Answer 8

group 1
most reactive group of metals
shiny and silver
soft metals

Question 9

democritus

Answer 9

all matter can be divided up into smaller pecies

Question 10

thomson

Answer 10

plum pudding model
plum (electrons)evenly distributed throughout the pudding (atom)

Question 11

bohr

Answer 11

electons orbit the nuculeus like plantets orbit the sun

Question 12

alkaline earth metals

Answer 12

group 2
reactive but not as reactive as group 1
shiny silvery strong metals

Question 13

chadwick

Answer 13

planetary model
modified rutherford theory

Question 14

isotopes

Answer 14

an atom with the same number of protons but different number of neutrons

Question 15

rare earth metals

Answer 15

bottom of table

Question 16

aristole

Answer 16

rejected democritus theory of the atom everything is made up of water fire air earth