Unit No: 7Fb
Lesson Title: Fizzy pop
MK- test for hydrogen; acids can be corrosive; rust is an e.g. of metal corroding; words rust, corrode, hydrogen
SK — hydrogen forms when acids react with metals; not all metals react with acid; rainwater is acidic; the difference
between reactants and products; acid rain,
Starter question —
What did we see last lesson when a piece of zinc was put in Hydrochloric acid?
Did it disappear? Gas given off?
Discuss meaning of corrosion (only iron rusts — it is a particular meaning)
s how rusted nail
how rusted nail
Acids can be corrosive.
DEMO — how to collect gases, could use worksheet 7fb/1
PRAC then either use worksheet 7fb2 or pupils react magnesium, zinc and iron
with sulphuric acid and test the gas with a lit splint.
Could get method and results put into books or use the worksheets
OR use 7Fb/6
Plenary. get equation in book acid + metal --> hydrogen
Alternatively can use the purple box Qs on p68
and the yellow box summary.
Statements as part of plenary
session. or order the
metals in order of reactivity.
or order the metals in order of reactivity.
rusty nail Bunsen burners, heat proof mats, splints, test tubes, boiling tubes, magnesium, copper, tin,
iron, zinc, aluminium, magnesium,
dilute hydrochloric, sulphuric and nitric acids.
All about hydrogen — 7Fb/6
Goggles for all practical work and care with bunsens