Sunday, 1 July 2012

Is it alive? - Experiment Part 1 Observations Table (27 June 2012)

Substances are each put in a test tube of 3ml of water. My lab partner and I have not come up with our inference for each of the substance. We will update the table soon! Look out for the results (:
 Substance
 Physical Appearance
Initial observation 
 Changes observed after 10 minutes
 Inference/ Evidence of life
 A
Flaky and brown in colour
 Sinks, does not dissolve
Most of the grains have sunk 

 B
Very small grains and light brown in colour 
 Fully dissolves
 The grains dissolve in the water but a few grains sediment at the bottom.

 C
 Tiny marble-like colourless grains
 Sinks
 Particles are suspended and the grains have become bigger.

 D
 Small sphere-like  grains, dark brown in colour
 Some float on the surface, the rest sink
 Water is clear. The particles have sunk.

 E
Very fine grains and dark brown in colour 
 Some float on the surface, a few are suspended, the rest sink
 Water is cloudy. Particles: Few are suspended, half is sunk, half is floating on surface

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