Free preview · Senior 1 Chemistry · Laboratory activities
Senior 1 laboratory activities
11 units · 22 activities. In every unit, activity 1 is improvised (simple local materials) and activity 2 is conventional (school laboratory equipment): two different experiments. Below are 5 free pages; then get the whole level in one PDF.
- Title and aim of every experiment
- Required apparatus and safety notes
- A clear, labelled drawing of the set-up
- Step-by-step procedure and a results table to fill in
- Observation and conclusion
- Three questions per activity, with sample results and answers at the end of the unit
See all 22 activities of this level and what each one is about
- Unit 1: Chemistry and Society
- 1.1 Improvised · Kitchen chemistry: which solids react with vinegar?. To show that chemistry happens in everyday life by testing common kitchen solids with vinegar.
- 1.2 Conventional · Making soap in the laboratory. To make soap by heating vegetable oil with sodium hydroxide (saponification) and to test its lathering.
- Unit 2: Laboratory Safety and Apparatus
- 2.1 Improvised · Reading hazard labels on household products. To identify hazard symbols on everyday products and decide how each product should be stored and handled safely.
- 2.2 Conventional · Using a Bunsen burner safely: two kinds of flame. To light a Bunsen burner safely and compare the luminous and non-luminous flames.
- Unit 3: States and Changes of States of Matter
- 3.1 Improvised · Making rain in a glass: evaporation and condensation. To observe evaporation and condensation, the changes of state in the water cycle.
- 3.2 Conventional · Cooling curve and freezing point of wax. To plot the cooling curve of paraffin wax (or stearic acid) and find its freezing point.
- Unit 4: Pure Substances and Mixtures
- 4.1 Improvised · Separating a mixture of iron, sand and salt. To separate a mixture of iron filings, sand and salt using their different properties.
- 4.2 Conventional · Simple distillation of coloured salty water. To obtain pure water from salty, coloured water by distillation and test its purity.
- Unit 5: Atoms, Elements and Compounds
- 5.1 Improvised · Building molecules with clay and toothpicks. To make models of molecules of elements and compounds and to tell them apart.
- 5.2 Conventional · Mixture or compound? Heating iron with sulfur (teacher demonstration). To compare a mixture of iron and sulfur with the compound iron(II) sulfide formed when they are heated together.
- Unit 6: Arrangement of Elements in the Periodic Table
- 6.1 Improvised · Building a periodic table with element cards. To arrange the first 20 elements by atomic number and discover groups of similar elements.
- 6.2 Conventional · Metals and non-metals: testing physical properties. To compare the physical properties of some metals and non-metals.
- Unit 7: Chemical Reactions
- 7.1 Improvised · Spotting chemical changes in the kitchen. To recognise the signs of a chemical reaction using everyday substances.
- 7.2 Conventional · Mass is conserved in a chemical reaction. To show that the total mass does not change when a chemical reaction takes place in a closed flask.
- Unit 8: Acids, Bases and pH
- 8.1 Improvised · A home-made indicator from red cabbage or flowers. To make an acid–base indicator from plant material and use it to classify household substances.
- 8.2 Conventional · Measuring pH with universal indicator. To measure the pH of laboratory solutions with universal indicator and arrange them on the pH scale.
- Unit 9: Water
- 9.1 Improvised · A bottle water filter. To make a simple water filter from local materials and test how well it cleans muddy water.
- 9.2 Conventional · Hardness of water: soap titration. To compare the hardness of different water samples by finding the volume of soap solution needed to form a lasting lather.
- Unit 10: Air Composition and Pollution
- 10.1 Improvised · How much of the air is oxygen? The rusting steel wool. To estimate the percentage of oxygen in air using rusting steel wool in an upside-down bottle.
- 10.2 Conventional · A model of acid rain (teacher demonstration). To show how sulfur dioxide from burning fuels makes rain acidic and damages plants.
- Unit 11: Waste Materials and their Effective Management
- 11.1 Improvised · Which wastes rot? A biodegradability test. To find out which common waste materials are biodegradable.
- 11.2 Conventional · Sorting plastic waste by density. To separate different plastics using their densities, as is done in recycling plants.
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