periodic table quiz

Question 1

John newlands

Answer 1

laid out elements according to atomic mass and discovered physical and chemical properties repeat every 8th element - law of octaves

Question 2

mendeleev

Answer 2

arranged table in increasing atomic mass - left spaces for elements not yet discovered

Question 3

moseley

Answer 3

rearranged table in order of increasing atomic number

Question 4

modern periodic law

Answer 4

mendeleev and mosley - when elements are arranged according to increasing atomic number there is periodic repetition

Question 5

periods

Answer 5

horizontal rows 1-7

Question 6

groups

Answer 6

vertical 1-18 - elements in the same group have very similar properties

Question 7

what are most elements on the periodic table known as

Answer 7

metals - on the left of stair step

Question 8

non metals

Answer 8

to the right except hydrogen

Question 9

properties of metals

Answer 9

shiny, ductile, malleable, good conductors, generally solids, lose valence electrons when in reactions

Question 10

properties of non metals

Answer 10

mostly gases, poor conductors, gain electrons in reactions

Question 11

metalloids

Answer 11

in between metals and metalloids semi conductors

Question 12

alkali metals

Answer 12

very reactive, high boiling point, lose 1 electron

Question 13

alkali earth metals

Answer 13

silvery white, high boiling point, reactive, lose 2 electrons

Question 14

halogens

Answer 14

very reactive, gain 1 electron, low melting and boiling point, toxic

Question 15

Nobel gases

Answer 15

unreactive, no need to gain or loose electrons very stable,