Egg Osmosis ExperimentBy: Kim LontocRoom: 873

Purpose:

To observe osmosis in a cell.

•1) Place eggs in vinegar to remove shell.•2) Measure weight of egg.•3)Measure size of egg.•4) Place one egg in water, place other egg in corn syrup.•5) Weight and measure eggs again.

Hypothesis:

Egg in Corn Syrup1. Weight may be heavier.2. Size may look the same.3. Might look glossy, shiny, sticky.

• Egg in corn syrup – weight, size, look like• Egg in water – weight, size, look like.

Hypothesis:

Egg in Water1. Weight may be lighter.2. Size might look bigger.3. Might look clear and not visible.

Materials:

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• Eggs• Beakers• Balance• String• Measuring Tape• Vinegar • Corn Syrup• Water

Observations: Chart with Results

Column 1 Before After

Corn Syrup

W 71.5 g S 16 cm

W 50.6 g S 14.5 cm

Water/H2O W 71.4 g S 16 cm

W 87.5 g S 18.5 cm

Observations: 3 visual observations

• Bubbles going up.• When shells got out vinegar, result was bouncy and squishy.• After 24 hours, lots of foam near top of beaker.

Conclusion:

• Became larger because water moved into egg.

• Because egg had lower concentration of water.

• Moved from higher concentration>lower concentration.

• Became smaller because water moved out of egg.

• Because egg had higher water concentration.

• Moved from lower concentration>lower concentration.

Conclusion:Egg in Water:• Hypothesis was wrong because

I thought:• Weight: Heavy because

molecules are bigger and egg would be too.

• (Egg was smaller)• Size: Big because egg would

absorb water.• (Egg was smaller)• Appearance: Clear because

water is clear.• (Looked fatter)

Egg in Corn Syrup:• Hypothesis was wrong because I

thought:• Weight: Heavy because molecules

are bigger and egg would be too.• (Egg was light and small)• Size: Molecules might be too big

and can’t absorb corn syrup as much as water.

• (Egg was smaller)• Appearance: Glossy, shiny, sticky.• (Dented and deflated)