6.1: group 1

Question 1

what are groups in a periodic table

Answer 1

they are the columns within the periodic table

Question 2

what information does the group number tell us

Answer 2

the amount of electrons in the outer shell

Question 3

what are the properties of alkali metals

Answer 3

soft with relatively low melting points

Question 4

what are the products of lithium, sodium and potassium reacting with water

Answer 4

they react vigorously to have products of an alkaline metal hydroxide and hydrogen

Question 5

how does lithium react with water

Answer 5

fizzes steadily

Question 6

how does sodium react with water?

Answer 6

melts into a ball and then fizzes quickly

Question 7

how does potassium react with water?

Answer 7

gives off sparks and hydrogen burns with a lilac flame

Question 8

what is order of reactivity in group one

Answer 8

least reactive at the top with most reactive at the bottom

Question 9

why is does the reactivity vary like this?

Answer 9

It​ ​is​ ​easier​ ​to​ ​lose​ ​electrons​ ​due​ ​to​ ​the​ ​increase​ ​in​ ​electron​ ​shells​ ​as​ ​you​ ​go​ ​down the​ ​group