periodic table

Question 1

What happens when group 1/alkaline metals react with water?

Answer 1

-they react vigourasly
-produces metal hydroxide solution.This alkaline
-also produces hydrogen- this is why you see fizzing

Question 2

What is the word+symbol equation for alkaline metals+water?

Answer 2

W- Sodium+water- sodium hydroxide+hydrogen
S-2Na+2H2O- 2 NaOH+H2

Question 3

What happens when group 1/alkaline metals react with oxygen?

Answer 3

-Form metal oxides

Question 4

What happens to Group 1 elements going down the group?

Answer 4

-become more reactive
- the outermost shell gets further form the nucleus- attraction between outermost electrons+nucleus becomes less

Question 5

What are the properties of the halogens/group 7 metals?

Answer 5

As atomic number increases -elements have darker colour+higher boiling point

Question 6

What is chlorine at room temperature?

Answer 6

-fairly reactive
-poisonous
green gas

Question 7

What is Bromine at room temperature?

Answer 7

• poisonous red-brown liquid
  -gives of orange vapour at room temp

Question 8

What is iodine at room temperature?

Answer 8

-dark grey crystalline
- gives of purple vapour when heated

Question 9

What is the trend in reactivity in group 7?

Answer 9

• as u g down 7 the halogens become less reactive- it gets harder to attract the extra electron to fill the outer shell when its further away from the nucleus(atomic radius is larger)

Question 10

What is displacement reaction?

Answer 10

-when a more reactive metal displaces and less reactive metal in it’s compound.

Question 11

What is oxidation and reduction?and what type of reaction do they take place in?

Answer 11

-O - loss of electrons R-gain in electrons
-they happen simultaneously in displacement reactions
-Redox reactions

Question 12

What is an oxidising and a reducing agent?

Answer 12

-OA-accepts electron and gets reduced
-RA-donates electrons +gets oxidised