Lab 2 Recipes
Lab 2 Recipes
Activity 2 Solutions
Note — These solutions need to be exact for the activity to work well.
Solution 1: 0.9% saline
- Prepare 1.5 L for 20 students.
- Mix 9 g NaCl for each 1 L water.
- Dissolve well.
Solution 2: 3% saline
- Prepare 1.5 L for 20 students.
- Mix 30 g NaCl for each 1 L water.
- Dissolve well.
Activity 3 Solutions
Note — These solution do not need to be exact for the activity to work well.
Solution 1: 5% glucose
- Prepare 400 mL for 20 students.
- Mix 5 g glucose for each 100 mL water.
- Dissolve well.
Solution 2: 1% starch
- Prepare 500 mL for 20 students.
- Mix 1 g starch for each 100 mL water.
- Dissolve well.
Pro-Tip – use cellulose packing peanuts for Solution 2.
- Dissolve a handful in 500 mL of warm water with a stirring rod.
- This way is easier than using lab-grade starch powder, which clumps up very easily.
