i Find out what happens when metal reacts with acid.
ii Find out what happens when metal reacts with water.
iii Metals react with acid and water at different rates.
iv Electrons are arranged in shells round the nucleus of an atom. (extension only)
Scientific enquiry
v Describe patterns in the reactivity of metals using experimental data. (Framework YTO Sc1 9f)
vi Present observations using tables. (Framework YTO Sc1 9e)
Suggested alternative starter activities (5–10 minutes)
Recap last lesson / Share learning objectives / Problem solving / Brainstorming / Capture interest
Quick quiz in groups about metals reacting with air. / · Describe what happens when metals react with water and acids.
· Predict how reactive a metal is from experimental observations. (Sc1) / Chemical changes in a blacksmith′s. / Corrosion of coins in treasure chests. / Show a video clip of reaction of group I metals, including rubidium and caesium, with water.
Catalyst Interactive Presentations 3
Suggested alternative main activities
Activity / Learning objectives see above / Description / Approx.
timing / Target group
C / H / E / S
Textbook F2 / i and ii / Teacher-led explanation and questioning OR Pupils work individually, in pairs or in small groups through the in-text questions and then onto the end-of-spread questions if time allows. / 20 min / R/G / G / R / S
Activity F2a Practical / i, ii, iii, v and vi / Reacting metals with water Pupils watch a demonstration and answer questions. / 10 min / ü
Activity F2b Practical / i, iii and v / Reacting metals with acids Pupils carry out an experiment to react metals with dilute hydrochloric acid. / 15 min / ü / ü / (ü)
Activity F2c ICT / i and ii / Relatively reactive Pupils use a database to classify metals in order of reactivity. / 15 min / ü / ü / ü
Activity F2d Paper / iv / Electrons in atoms The most able pupils are encouraged to make the link between the periodic table and the arrangement of electrons in atoms. / 15 min / ü
Suggested alternative plenary activities (5–10 minutes)
Review learning / Sharing responses / Group feedback / Word game / Looking ahead
True/false quiz. / Pupils work in groups to discuss the outcomes of Activity F2b. / Whole group discussion relating to safety precautions when working with metals and acids. / Play ′What am I?′ to guess the metal. / Class discussion about trends in reactivity.
Learning outcomes
Most pupils will … / Some pupils, making less progress will … / Some pupils, making more progress will …
· understand the basic metal/acid reaction
· appreciate that more reactive metals produce the same amount of hydrogen faster rather than producing more hydrogen (all else being equal)
· understand that some metals react with water, but that this is a slower reaction than that with acid. / · recall the basic metal/acid reaction
· recall that some metals react with water. / · appreciate the emergent pattern of reactivity.
Key words / Out-of-lesson learning
corrosive, acid, salt, red only: base, alkali / Homework F2
Textbook F2 end-of-spread questions
Activity F2d
© Harcourt Education Ltd 2004 Catalyst 3
This worksheet may have been altered from the original on the CD-ROM.