PS2: Describe the characteristics and applications of solutions (a…
Describe the characteristics and applications of solutions (a later-grade, partial match: crystal solutions).
The Prince Edward Island Science curriculum outcome PS2 (Physical Science: Mixtures and Solutions) for Grade 7 says: “Describe the characteristics and applications of solutions (a later-grade, partial match: crystal solutions).” These 2 Fieldbook units teach it hands-on, with everyday materials and a printable teacher guide and student sheet for every lesson. Official wording: Prince Edward Island Science curriculum.
Earth and Sky at Home Grades K–5
Make a rainbow on the kitchen floor, grow crystals on a windowsill and build a cloud in a jar. Three classic home experiments that actually work, with the real science explained for grown-ups.
- Where do rainbows come from? 45 min, plus 10 min outside on a sunny day
Children split sunlight into colours with a glass of water, test whether the water is what makes the rainbow, and make their own rainbow with a hose mist. They finish able to explain that white light is a mix of colours that water bends apart.
- How do crystals grow? 40 min to set up, then 5 min a day for 5 to 7 days
Children watch the grown-up make strong salt, Epsom salt and sugar solutions, set out dishes and a string, then check them every day for a week. They finish able to explain that crystals form when dissolved particles line up as the water leaves.
- How does a cloud form? 40 min
Children watch the grown-up set up two jars of hot water with ice on top, add a wisp of smoke to one, and compare the clouds. They finish able to explain that clouds form when moist air cools and water collects on tiny specks.
Kitchen Chemistry Grades 7–8
Fizzing, curdling and colour changes with things from the grocery store. Students gather evidence of new substances, weigh a reaction in a sealed bottle, and turn red cabbage into an acid detector.
- Is it a new substance? 50–60 min
Teams run six quick kitchen changes, from dissolving sugar to curdling milk, and record properties before and after. They sort each change as physical or chemical using evidence, and find out why a single clue like bubbles or a colour change isn't proof on its own.
- Where does the mass go? 50–60 min
Teams weigh baking soda and vinegar reacting in an open cup, then in a capped pop bottle. The open cup gets lighter and the capped bottle doesn't, until they open it. Students use atoms to explain why mass is never lost in a reaction, only let out.
- Can red cabbage tell acid from base? 50–60 min
Students add purple cabbage juice to safe household liquids and watch it turn pink, purple, blue or green. They build a colour scale, sort the liquids into acids and bases, identify two mystery liquids, and watch an acid and a base cancel each other out.
More Prince Edward Island Grade 7 science outcomes we teach
Every Prince Edward Island Grade 7 science curriculum outcome we teach
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