explain briefly why a razor blade floats in water and when soap solution is carefully added to the water it sinks
The soap solution reduces the surface tension on one side of the blade. So the blade is pulled with lesser force from this side from the other side, where no soap solution has reached, the force is high and hence the blade moves.
surface tension is sufficient to support the razor blade
soap solution disrupts the surface tension ... makes the water "wetter"
When it is raining it is advisable not to touch canvas tent from inside.Explain the behaviour of molecules
When it is raining, water droplets will form on the outside of the canvas tent. The molecules in these water droplets are attracted to each other and they form hydrogen bonds, which make the droplets stick together and to the surface of the tent.
If you touch the inside of the tent, you are likely to disturb these hydrogen bonds and cause the droplets to fall onto the interior of the tent. This is because the surface tension of the droplets can be easily broken by outside forces such as touch.
Furthermore, the canvas material is not completely waterproof, so water may seep through the fabric and cause wetness inside the tent. Therefore, it is advisable not to touch the tent from the inside to avoid getting wet during rainy weather.
Well, isn't that a sharp question? So, imagine a razor blade taking a dip in water. Initially, it floats like a buoyant little pirate because of something called surface tension. The surface tension of water, like a microscopic force field, allows objects with low density, like the razor blade, to float on its surface.
But here's where the soapy plot twist comes in! When soap solution is added to the water, it decreases the surface tension. It's like the soap solution moonlights as a superhero, defeating the villainous surface tension. As a result, the razor blade loses its buoyancy and sinks like a nervous dolphin trying to impress its peers. The reduced surface tension weakens its ability to float, causing it to take the plunge.
So remember, kids, if you want to make a razor blade sink, just add a little soap action and watch it go down like a bumbling clown at a talent show!
A razor blade floats in water because its density is less than that of water. Density is a measure of how much mass is packed into a given volume. When the density of an object is less than that of the liquid, it will float.
To understand why a razor blade is less dense than water, we can look at its composition. Razor blades are typically made of stainless steel, which has a relatively low density. Stainless steel is an alloy made primarily of iron, carbon, and other elements, which gives it a lower overall density compared to pure iron or steel.
Now, when soap solution is carefully added to the water, the density of the water increases. Soap molecules have hydrophilic (water-attracting) and hydrophobic (water-repelling) parts. Soap reduces the surface tension of the water and disrupts the hydrogen bonding between water molecules, causing the water's density to increase.
Since the density of the water increases, it eventually becomes greater than the density of the razor blade. As a result, the razor blade sinks. The soap solution essentially makes the water denser, causing the razor blade to no longer float.
In summary, a razor blade floats in water due to its lower density compared to water. However, when soap solution is added, the increased density of the water causes the razor blade to sink.