Elements, Compounds, and Chemical Reactions
Every substance around you is built from elements. When they combine, something new appears — and the evidence is often visible.
Evidence you will build
- Observation table with reaction evidence
- Word equation set
- Periodic table classification activity
- Real-world chemical reaction case study
Why this matters
Chemical reactions shape food, fuel, and living systems in Aotearoa — from fermentation to combustion in everyday life.
What you will investigate and collect
You will interpret formulas, classify elements, observe reactions, and write word equations using clear evidence from the lab. How elements combine into compounds and how you can tell a chemical reaction has occurred from observable evidence. Reaction observations (colour, gas, precipitate, temperature change), element classifications, and word equations.
- Date
- Reaction or mixture name
- Evidence observed
- Word equation
What you might make or share
- 3D-print test piece3D print
Isolate one fair-test comparison with a disposable small print
When one variable dominates your comparisons, printing a test shape keeps other factors steady.