Can water hold a penny?

Can water hold a penny?

The attraction of water molecules to other substances, like soil or glass, is called adhesion. As drops of water are added onto a penny, the adhesive force between the water and the penny keeps the water from falling off. Cohesive forces are strong, but not unbreakable.

How many drops of water did fit on the head of a penny?

The results indicate that when you drop water on a penny that the heads side of the penny will hold more drops (heads 23 drops, tails 18 drops).

What happens when you put cold water on a penny?

Water’s cohesion and surface tension are special because of hydrogen bonds. The cohesion and surface tension of water becomes apparent when the drops of water you add to the penny reach the penny’s edge. Once the water has reached the edge, you begin to see a bubble or dome of water forming on top of the penny.

How does soap make water wetter?

The detergent molecules also help to make the washing process more effective by reducing the surface tension of the water. The surfactant molecules of the detergent break apart these forces and make water behave, well, wetter!

Why does a penny hold more drops of water than alcohol?

Alcohol molecules can meet at areas where they would not attract as strongly. The water is more attracted to itself than to the metal of the penny. The alcohol is a bit less attracted to itself so it spreads more on the penny.

How many soapy water drops can fit on a penny?

Our results were interesting. I knew that the oil should have less surface tension than the water, but we had equal results – 23 drops for each. Soapy water had the least surface tension. We were only able to get 11 drops of soapy water on the penny.

Why does soapy water not stay on a penny?

This is because plain tap water has higher surface tension, so the surface is “stronger” and can hold together a larger drop. Adding soap lowers the water’s surface tension so the drop becomes weaker and breaks apart sooner.

How many pennies can fit in a 5 gallon water jug?

The average number of pennies that will fit into a 5-gallon jug ranges between 20,000 to 30,000 pennies.

How to count how many water drops fit on a penny?

The kids followed these instructions to find out how many drops of water can fit on a penny and other coins: Set the coin on a flat surface. Fill a plastic pipette with water. Carefully squeeze out water drop by drop from the pipette onto the coin. Count how many drops fit on the coin before the dome breaks and the water spills over.

How many pennies can you fit in a penny tower?

57×57 as both sides of the square base can fit 57 pennies each, would give you 7796 pennies As the penny towers would fit pennies each. Throw in some extra and then you would get around 8000 pennies.

What is the thickness of a penny coin?

A penny coin has a diameter of 20.3mm and a thickness of 1.65mm [neither of these are strictly correct as the coin has a milled edge and the thickness varies, due My answer is based on the first part of the answer provided by John Steele (hope I linked correctly).

https://www.youtube.com/watch?v=93BAHWFJkrE