chapter 2 - periodic table

Question 1

why did Mendeleev leave gaps in his periodic table?

Answer 1

There where elements not yet discovered

Question 2

where on the periodic table are alkali metals shown?

Answer 2

far left

Question 3

where on the periodic table are transition metals shown?

Answer 3

centre

Question 4

where on the periodic table are non metals, halogens and noble gases shown?

Answer 4

right

Question 5

what group has very reactive metals?

Answer 5

group 1

Question 6

what group has very metals that form ions with a 2+ charge?

Answer 6

group 2

Question 7

what is the reactivity of group 0?

Answer 7

very unreactive , non metal gases

Question 8

what is the definition of malleable?

Answer 8

movable or able to shape.

Question 9

what do lithium, sodium and potassium have in common?

Answer 9

all have one electron in their outer shell.

Question 10

what are the properties alkali metals?

Answer 10

soft / dull outside / shiny inside / easy to cut

Question 11

what are the properties of transition metals?

Answer 11

hard to cut / hard