On its own, ice is not slippery. When you step onto an icy sidewalk, you do indeed feel a slippery surface. But the slipperiness is caused by a thin layer of liquid water and not directly by the solid ice itself. Water on a smooth surface is slippery because water

Objects always fuse to your finger when you touch them. You often don't notice this for two reasons: 1) Your finger is stronger than the object you are touching. When you pull away, you rip atoms off the object and these atoms remain fused to your finger as a microscopic

Metals do burn. In fact, most metals release a lot of heat when they burn and are hard to put out. For example, thermite is used to weld train rails together. The fuel in thermite is the metal aluminum. When thermite burns, the aluminum atoms bond with oxygen atoms to

Atoms do not always contain the same number of electrons and protons, although this state is common. When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of

There is only one significant force at work in chemical reactions: the electromagnetic force. There are four fundamental forces in the universe: gravity, the electromagnetic force, the weak nuclear force and the strong nuclear force. Gravity is too weak to affect chemical reactions much, seeing as chemical reactions involve the

Crystals are in fact very common. Take a look around you when you sit down to dinner. Your metal knife is a crystal, as are your spoons, forks, and metal serving bowls. The ice in your cup is a crystal, as is the salt in your shaker. Your ceramic plates

Hi,

There are many sunscreens available in the market which make very tough to choose the best among them. But on the basis of chemical free, we can filter easily and choose the best one.

Most of the sunscreens has silicones and parabens. If you want to chemical free sunscreen,

The answer to this question really depends on your situation. Let us state the question more concretely: we have a clean, wet load of laundry that just got washed. We want to dry the clothes as quickly as possible but only have the option of hanging up the clothes to

The breaking of chemical bonds never releases energy to the external environment. Energy is only released when chemical bonds are formed. In general, a chemical reaction involves two steps: 1) the original chemical bonds between the atoms are broken, and 2) new bonds are formed. These two steps are sometimes

The hole in the ozone over Antarctica still exists, but it is no longer the threat it once was according to an October 2012 NASA press release. According to NASA, the hole appears and disappears every year due to a complex interplay of seasonal weather patterns. Ozone blocks most of