Why does paper stick to a glass of water?

Why does paper stick to a glass of water?

Adhesion occurs because water molecules, having the positive and negative ends, are also attracted to other materials. In the experiment that you conducted, the water molecules are attracted to the paper, adhering to it, while continuing to keep the surface tension with the other water molecules.

Why does water stay in inverted glass?

Fill a cup of water and put a cardboard on top of it, then turn it upside-down, the water will not fall out. The explanation said this was because the atmosphere pressure was greater than the water pressure, which holds the water up.

What will happen to the paper towel inside the glass when it will be submerged upside down in the basin of water?

Air is less dense than water so it is able to stay on top of the water. The paper towel will not get wet as long as the air stays in the glass. If you tip the glass (even slightly), the air trapped in the glass will rush out in the form of bubbles.

What is inverted glass?

Hold the cover by pressing from top with one hand and invert the glass. Gently remove the hand from the cover. The cover does not fall and holds the water in the glass. Discussion: The upper portion of the glass contains air and hence presses the water down.

What happened to the water in a glass with a cover?

There are just as many water molecules condensing back to water as there are evaporating into the air. So covering the glass does not stop it from evaporating. Instead, it keeps the water vapor in place, so it can bump back into the liquid again.

What do you see on the paper when the glass of water is exposed to sunlight?

Hold the glass of water (being careful not to spill it) above the paper and watch as sunlight passes through the glass of water, refracts (bends) and forms a rainbow of colors on your sheet of paper.

What happens when paper is put in water?

When water is added to paper, the hydrogen bonds holding the cellulose fibers begin to break down. This is because water molecules consist of oxygen and hydrogen atoms, which form hydrogen bonds with cellulose fibers, thus weakening their own hydrogen bonds in the process.

What happened when the bottle was immersed upside down in the water?

Air pressure. The water is trying to get up into the bottle from underneath, which means that the air inside has nowhere to go. As water tries to push into the bottle, it compresses the air, causing the air pressure to rise, which pushes back against the water.

Why the arrow is back to original direction after moving the glass of water towards paper with arrow?

Instead of spreading out in straight lines, the light changes direction both when it enters and leaves the glass of water. This change of direction is called refraction and it happens because the light slows down as it enters the glass and speeds up again as it leaves.