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Cold and warm waterproofing experiment

This straightforward scientific exercise demonstrates the distinction in density between cold and hot water. It may be a bit messy so I’d do it exterior or put the jars in a container.

The demonstration works as a result of chilly water has a higher density than heat water, so the nice and cozy water is on prime of the chilly.

When water is heated, water molecules transfer round quicker, bounce off one another and transfer farther aside. As a result of there may be extra space between the water molecules, the density of hotter water is lower than the identical quantity of cooler water.

blue cold water sitting under red warmer water for a science experiment on density
Tightness demonstration with cold and hot water

You want

Two small or medium glass jars

Scorching water

Chilly water

Small sheet of card

Pigment

Drawer – elective however suggested

Tips on how to make cold and hot water pots?

Fill one of many jars with sizzling water and add just a few drops of pink meals coloring.

Fill the second jar with chilly water and add a drop of blue meals coloring.

Examine that each jars are as full as potential.

Scorching water on chilly

Place a sheet of cardboard over the jar stuffed with sizzling water and thoroughly place it on prime of the jar containing the chilly water.

When the pots are balanced, fastidiously take away the cardboard.

The 2 colours of water ought to be stored separate.

Chilly water on prime sizzling

Refill the jars and take a look at once more. This time, place the chilly water on prime of the nice and cozy water.

The 2 colours of water have to be blended.

Density of water

Heat water has a decrease density than chilly water, so the pink heat water will stay on prime of the chilly water when the cardboard is eliminated between the jars.

In case you put the new water on the underside, the colours combine because the denser chilly water falls down into the much less dense heat water.

Our picture is not excellent because it’s laborious to take away the cardboard between the jars with out some water spilling out, however ship me a photograph in the event you get a greater outcome.

One other density demonstration might be completed with salt to extend density of a jar of water. Within the picture under, the salt has been added to the blue water.

Two glasses on top of each other filled with water, food coloring and different amounts of salt.  One color floats on top of the other.
Density demonstration with salt water and no salt water

#Scorching #chilly #waterproofing #experiment

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