Norien Reyes

8-73

To observe osmosis in

a cell

1) Place eggs in vinegar

to remove shell

2) Measure weight of

egg using balance

3) Measure size of egg

using measuring tape

4) Place one egg in

water, place other in

corn syrup.

5) Weigh and measure

eggs again

Egg in corn syrup

I predict...

the egg will weigh less

the egg size will be smaller

it will still have it’s shell, a little bit of it

it will be short and round

Egg in water

I predict…

the egg will weigh more

it will be bigger, since it

will weigh more

it will look bigger

Eggs

Beakers

Balance

String

Measuring tape

Vinegar

Corn syrup

Water

Before After

Corn Syrup Weight : 71.5 g

Size:16 cm

Weight : 50.6 g

Size :14.5 cm

Water Weight : 71.4g

Size : 16 cm

Weight : 87.5 g

Size : 18.5 cm

1) After Vinegar• bouncy, squishy • foam on top of

beaker

2) After Corn Syrup• dented and

deflated • smaller

3) After Water • bigger

Higher concentration to lower concentration

Water Egg

Got larger

Water moved into egg (egg had lower concentration of water)

Water moved from higher (water) to lower (egg) concentration

Corn Syrup Egg

got smaller

water moved out of egg (egg had higher water concentration than corn syrup)

water moved from higher (egg) to lower (corn syrup) concentration

Hypothesis: Water Egg

Right about what egg’s weight, size, and how it looked like

Looked bigger

Weighed more

Became larger

Hypothesis: Corn Syrup Egg

Right about egg’s weight and how it looked like

Wrong about how it looked like because it was dented and deflated