Describe How Salts Are Made from Acids and Bases

Learning objectives
iWhen a base neutralises an acid, a salt and water are made.
iiThe name of the salt comes from the names of the acid and base used to make it.
iiiWrite word equations.
Scientific enquiry
ivMake observations using pH paper (optionally dataloggers) to identify when neutralisation has taken place.
Suggested alternative starter activities (5–10 minutes)
Recap last lesson / Share learning objectives / Problem solving / Brainstorming / Capture interest
Pupils identify typical properties of metals. /

Describe how salts are made from acids and bases.
Work out the names of salts.

Use pH paper to tell when neutralisation happens. (Sc1)

/ Pupils watch a demo and think what happens when acids react with metals and carbonates. / Uses of common salt. / Safe handling of acids.
Suggested alternative main activities
Activity / Learning objectivessee above / Description / Approx.
timing / Target group
C / H / E / S
Textbook E2 / i, ii and iii / Teacher-led explanation and questioning ORPupils 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 E2a Practical/ICT / i, ii, iii and iv / Making sodium chloridePupils make sodium chloride crystals using hydrochloric acid and sodium hydroxide solution. Demonstration to show pupils that neutralisation can be followed using datalogging equipment. / 30 min /  / 
Activity E2b Discussion / ii and iii / Equations for saltsPupils use cut and paste to complete equations for making salts. Extension: pupils write symbol equations. / 10 min /  /  / ()
Suggested alternative plenary activities (5–10 minutes)
Review learning / Sharing responses / Group feedback / Word game / Looking ahead
True/false game. / Groups combine to discuss outcomes of Activity E2b. / Groups compare salt crystals from Activity E2a with other groups and with commercial crystals. / Anagram activity. / Pupils suggest what else acids react with.
Learning outcomes
Most pupils will … / Some pupils, making less progress will … / Some pupils, making more progress will …

describe how a salt and water are made when acids are neutralised by bases
represent examples of neutralisation with general and specific word equations

name a variety of salts.

describe one example of making a salt by neutralisation

represent neutralisation with a general and a specific word equation naming the salt correctly.

represent chemical compounds by formulae and combine these into symbol equations
use knowledge of reactions to make predictions about other reactions

interpret a pH curve.

Key words / Out-of-lesson learning
salt / Homework E2
Textbook E2 end-of-spread questions
Find out the names of salts used in household products or medicines.

This worksheet may have been altered from the original on the CD-ROM.