reactivity

Question 1

what is reactivity?

Answer 1

how easily a substance participates in chemical reactions

Question 2

describe the properties of group 1 metals

Answer 2

soft
shiny
low melting points

Question 3

what happens when group 1 metals react with water?

Answer 3

Lithium-bubble and fizz
Sodium-moves across water surface
Potassium-lilac flame

Question 4

what is the word equation for when metals react with water?

Answer 4

metal + water -> metal hydroxide + hydrogen

Question 5

what is the test for hydrogen?

Answer 5

hold a lit splint at the end of a test tube, if a squeaky noise is made, hydrogen is present

Question 6

what are group 7 (halogens)

Answer 6

non metals

Question 7

what are the properties of group 7 non metals

Answer 7

very reactive
low melting point
don’t conduct electricity

Question 8

what is the word equation for a group 7 non metal and metal?

Answer 8

metal +group 7 -> metal group sevenide
example:
sodium + chlorine -> sodium chloride

Question 9

what are the properties of noble gases?

Answer 9

not reactive
low melting point
gas at room temp.

Question 10

what is a use of helium?

Answer 10

balloons

Question 11

what is a use of neon?

Answer 11

lasers

Question 12

what is a use of krypton?

Answer 12

light bulbs + lamps

Question 13

what is a use of xenon?

Answer 13

general anaesthetic gas

Question 14

what happens when iron reacts with oxygen?

Answer 14

lights up and melts

Question 15

what happens when copper reacts with oxygen?

Answer 15

turns silver

Question 16

what happens when zinc reacts with oxygen?

Answer 16

it melts

Question 17

what happens when magnesium reacts with oxygen?

Answer 17

it creates a flame

Question 18

what is produced when metals react with acids?

Answer 18

salt + hydrogen

Question 19

what happens when magnesium reacts with hydrochloric acid?

Answer 19

bubbling, fizzing and smoking

Question 20

what happens when zinc reacts with hydrochloric acid?

Answer 20

bubbling

Question 21

what happens when iron reacts with hydrochloric acid?

Answer 21

slight bubbling

Question 22

what happens when copper reacts with hydrochloric acid?

Answer 22

nothing

Question 23

what is a metal carbonate?

Answer 23

a compound containing a metal, carbon and oxygen

Question 24

what is the word equation for a metal carbonate and an acid?

Answer 24

metal carbonate + acid -> salt + water + carbon dioxide

Question 25

how do you react a metal carbonate with an acid?

Answer 25

1. put two test tubes in a rack, put a spatula of metal carbonate into one 2.add limewater to the second test tube, filling over half way 3.put hydrochloric acid into the first test tube and place the bung on top 4. put the straw into the limewater

Question 26

how do you test for carbon dioxide?

Answer 26

limewater

Question 27

what is a displacement reaction?

Answer 27

a reaction involving a metal and a compound of a different metal, the more reactive metal will displace the less reactive metal

Question 28

what is the order of metal reactivity?

Answer 28

pink squirrels lick clean mighty zebras in Cornwall

Question 29

give an example of a displacement reaction

Answer 29

magnesium + copper sulphate -> magnesium sulphate + copper