c1 periodic table

Question 1

what did mendeleev do when arranging the period table

Answer 1

he left gaps for undiscovered elements and predicted their properties

he swapped the order of some elements

Question 2

name for group 1

Answer 2

alkali metals

Question 3

name for group 7

Answer 3

halogens

Question 4

name for group 0/8

Answer 4

Nobel gases

Question 5

what is the trend in group 7

Answer 5

become less reactive as u go down fluorine-most

Question 6

what is the trend for group 1

Answer 6

becomes more reactive as u go down the group francuim-most

Question 7

what’s the bottom name of a elements number?

Answer 7

atomic number

Question 8

what is the top name of a numbers element

Answer 8

relative atomic mass

Question 9

name 3 features of alkali metals

Answer 9

low density
float on water/very reactive with water
soft

Question 10

name 1 feature of halogens

Answer 10

very toxic

Question 11

non metals features?

Answer 11

brittle
don’t form positive ions
don’t conduct electricity

Question 12

metals features?

Answer 12

high melting points
form postage ions
strong/ good conductors

Question 13

what are transition metals good for

Answer 13

they are good conductors of heat and electricity
high dense
hard and tough

Question 14

give 3 examples of transition metals

Answer 14

gold silver and titanium