Have you ever ever wished your sweets had been greater? One straightforward method to develop a gummy bear or some other jelly sort candy is to place it in water. The sweet will develop however may not style nearly as good!
Water strikes into the gummy bear by a course of referred to as osmosis. Osmosis is the motion of water by a semi-permeable membrane from an space of excessive water focus to an space of low water focus. Water strikes throughout the membrane till the water focus is identical on each side.
We designed an investigation to seek out out what occurs to a gummy bear in plain water and salt water.
You’ll want
Gummy bears or different jelly candy
Water
Salt
Spoon
Kitchen scales – optionally available
Small bowls or cups
Directions
Add sufficient water to 2 small bowls to cowl the gummy bear utterly. Every bowl ought to comprise the identical quantity of water.
Add a tablespoon of salt to at least one bowl and stir properly.
Weigh every gummy bear and report the burden.
Place one gummy bear into every bowl.
Hold a 3rd gummy bear to at least one facet. That is the management gummy bear.
Examine each half-hour for about 3 hours.
Weigh the gummy bears once more.
It’s best to discover that the gummy bear in plain water will increase in dimension, and the gummy bear in salt water both shrinks or stays the identical dimension.
The largest gummy bear was the one soaked in plain water and the one on the backside the management.
Extension Duties
Add the expanded gummy bear to salt water and go away for a number of hours. It ought to shrink again down as water strikes out of the gummy bear and into the salty water.
Arrange an investigation with a collection of bowls containing completely different quantities of salt. Watch what occurs to every gummy bear!
What’s occurring
Gummy bears and different jelly sweets are made principally from water, gelatin and sugar. The focus of water contained in the gummy bear is low in comparison with exterior the gummy bear, so water strikes into the candy by osmosis. Because of this the gummy bear in plain water grows in dimension.
The focus of the water within the salty water might be much like that contained in the gummy bear, so this candy doesn’t improve in dimension. If you happen to made the water further salty, the gummy bear would possibly shrink as water strikes out of the bear into the water.
Extra science concepts
Be taught extra about osmosis with eggs! If you happen to take away the shell of an egg with vinegar to disclose the membrane and place it in water, the egg will develop in dimension as water strikes into the egg.
Construct sweet towers, a sweet home, strive some sweet chromatography and extra with my assortment of sweet science experiments.
Final Up to date on February 16, 2024 by Emma Vanstone
