Water has a higher surface tension than gasoline, causing it to bead up on a waxed surface. The hydrophobic properties of the wax repel the water, leading to beading. Gasoline, on the other hand, has a lower surface tension than water and does not experience the same beading effect on a waxed surface.
The property of water demonstrated is surface tension, which causes the water molecules to stick together and form droplets on the surface of the waxed car hood rather than spreading out. This is due to the hydrophobic nature of the wax, which repels water.
Yes, burning gasoline in an engine to power a car is a chemical change. The gasoline undergoes combustion, reacting with oxygen to produce carbon dioxide, water, and energy in the form of heat that powers the engine.
I went to the gas station to get some gasoline for my truck. Without gasoline in the tank, the car wouldn't run.
Yes, the combustion of gasoline in a car engine is a chemical change. During combustion, gasoline reacts with oxygen to produce carbon dioxide, water, and energy, which are all different substances from the original gasoline.
No, water does not effectively wash off gasoline. Gasoline is non-polar and hydrophobic, meaning it does not mix well with water. Instead, it is best to use a degreaser or specialized cleaner designed to remove gasoline.
A waxed car is not hydrophilic, it is not wetted with water. A drop of water falling on such a surface does not speak out wetting the surface. Instead the surface tension of the water drop pulls it into a spherical shape that sits on top of the surface until it either slides off or evaporates.
Water molecules are sticky due to hydrogen bonds
Beads of water form on a slippery surface like a freshly waxed car because the surface tension of water causes it to bead up rather than spread out. The hydrophobic nature of the wax repels water, causing it to form into droplets instead of wetting the surface.
Mercury would bead up more on a waxed car. The wax provides a hydrophobic surface that repels water and other liquids, causing them to bead up instead of spreading out. That same principle applies to mercury.
This phenomenon is called surface tension.
No
Most gas stations have several filters to keep water out but water can get into the gasoline. Yes, it is possible.
The property of water demonstrated is surface tension, which causes the water molecules to stick together and form droplets on the surface of the waxed car hood rather than spreading out. This is due to the hydrophobic nature of the wax, which repels water.
Yes, but it is usually water in the gasoline that freezes.
Wax is hydrophobic, meaning it repels water. Of course, this repulsion is not strong enough to make the water hover a millimeter above the surface, but it is strong enough to force the water to act in this way, rather than sit there in a thin sheet. The "surface tension" of the water itself also plays a role.
Gas
Examples of Cohesion *Water clinging to your newly waxed car *Water clinging to a pice of waxed paper The examples above are actually examples of ADHESION not COHESION. ADHESION is the force that attracts two DIFFERENT materials together. COHESION is the sticking of two LIKE substances.