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Introduction

Grow your own Crystals An investigative activity by Jenny Douglas, Janet Troy and Vanessa Keenan-Boldt. Introduction. Purpose. Hypothesis. Materials. Method 1. Method 2. To produce a variable we decided to try our crystal experiment with a food colouring additive.

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Introduction

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Presentation Transcript

  1. Grow your own CrystalsAn investigative activity by Jenny Douglas, Janet Troy and Vanessa Keenan-Boldt

  2. Introduction

  3. Purpose

  4. Hypothesis

  5. Materials

  6. Method 1

  7. Method 2 • To produce a variable we decided to try our crystal experiment with a food colouring additive. • We followed the same method in our previous example and added food colouring to boiling water, room temperature water and cold water.

  8. 12 Hours later • Foggy substance forming around top of glass. • Salt at bottom of glass taking on pink colouring. • Small vein-like sticks protruding from string. • Random lumpy bits floating in glass.

  9. 48 Hours later • Vein-like sticks protruding from string are more prominent. • Foggy substance around glass is more pronounced. • Dry part of string has formed thick salty substance. • Tiny square crystals beginning to form on string that is in water.

  10. More results Left picture contains room temperature water and Right picture contains cold water after 48 hours. Both showed little change except for a crusty salt residue around the dry part of the string. The cold water started and remained quite bubbly.

  11. Discussion

  12. Conclusion

  13. Delegation of Activity

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