The group 7 elements

Question 1

what is another name for group 7 elements?

Answer 1

halogens

Question 2

name the 4 halogens

Answer 2

flourine, chlorine, bromine and iodine

Question 3

what do halogens react with?

Answer 3

alkali metals

Question 4

what is made when halogens react with alkali metals?

Answer 4

a metal halide

Question 5

what is made when lithium reacts with chlorine?

Answer 5

lithium chloride

Question 6

what colour is a compound of a metal halide when it is put into a solution?

Answer 6

a colourless solution

Question 7

what are the two possibilities if halogens are bubbled through solutions of metal halides?

Answer 7

there is no reaction or a displacement reaction

Question 8

what happens if bromine is bubbled through potassium chloride solution?

Answer 8

there is no reaction

Question 9

why is this?

Answer 9

because chlorine is more reactive than bromine

Question 10

why do halogens have similar properties?

Answer 10

because when they react each atom gains one electron to form a negative ion with a stable electronic structure

Question 11

at room temperature what colour is chlorine, bromine and iodine?

Answer 11

chlorine- green
bromine- orange
iodine- grey solid

Question 12

why are group 7 elements similar?

Answer 12

they all have seven electrons in their outer shell

Question 13

what is made when a halogen reacts with an alkali metal?

Answer 13

a metal halide is made