Class ResultsObservations over time (minutes)

Time when completely frozen (minutes)

80 90 100 110 120 130 140 150

Cooled Samples(‘C’)

1

2

3

4

5

6

Warmed Samples (‘W’)

1

2

3

4

5

6

We suggest you use the same 1-5 scale (where 1 is liquid water and 5 is solid ice) to complete the class results table. Please edit this table to suit your class size and efficiency of your freezer.

Investigation 2 - Water Teaching Resources

Class Results

Class water freezing results

Please circle your answer

Hard, medium or soft water?

Please circle your answer

Investigation 2 - Water Teaching Resources

For the majority of your groups, which water samples froze first?

COOLED SAME WARM

What was the majority class result for the water hardness test?

SOFT MEDIUM HARD

1 2 3 4 5