Read before you solve · 2 min
Read Neutralisation and indicator colours · Class 7 Q27
This SOF ISO pattern tests interpret acid-base behaviour. Read the condition carefully, then use the method below before you solve.
ISO · Acids Bases and Salts · 1 linked question · 100% coverage
Know this first
Chemistry questions first require the material, particles or reaction condition to be identified before a formula or rule is selected.
Observation · What the stem states or showsCondition · The factor that controls the change
Study deeper: Class 7 Science · Acids Bases and Salts
Find the tested idea
Identify the material, change or observable property first; this decides the scientific rule to use.
Work from the evidence
Use the experiment or stated observation as evidence. Compare each option with the property, particle model or reaction condition in the stem.
Verify before choosing
Use the wording, diagram and units exactly as given. Select an option only after it satisfies every stated condition.
OlympIQ exam lens
- ✓State the observed property.
- ✓Select the governing idea.
- ✓Test every claim against the evidence.
OlympIQ trap
Keep physical changes, chemical changes and everyday appearances separate.
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