Unlike many substances, water expands as it freezes. An ice cube takes up about 9% more volume than the water used to make it.
If you think water will over flow when you add handful salt dust into a full glass of water, it’s wrong. Really water level goes down. Salt made of NaCl. When we added salt in to water, NaCl separated in to Na+ and Cl- ions. After this separation water molecules began to bond with those ions. Because of these inter molecular bonding volume of water decrease.
If you pour a handful of salt (powdered) into a full glass of water, what will happen to the water level? What is the reason for your observation?
Saturn’s moon Titan has hundreds of times more oil and natural gas than all the known reserves on Earth.
Hummingbirds can’t walk. Emus and kangaroos cannot walk backwards. Hummingbirds are the only animals able to fly backwards.
The only elements that are liquid at room temperature are bromine and mercury. However, you can melt gallium by holding a lump in the warmth of your hand.
When we white wash our walls with lime(calcium hydroxide), It reacts with carbon dioxide in air and form Calcium bicarbonate first .With time with more carbon dioxide, Calcium bicarbonate converts into Calcium carbonate. That is the reason for the brightness of the wall with time. Ca(OH)2 + 2 CO2 →Ca(HCO3)2
Why is it taken some time for brightening the white color of newly lime washed walls?
The ocean absorbs red-orange(long wavelength) light. So, at the depth of about 30 feet in the ocean, there is no red light. Therefore, even blood appears green in colour.
Electric eels can stun both predators and prey with electric shocks of around 500 volts.
New research, published in the Journal Trends in Plant Science, has revealed that plants not only respond to sound, but they also communicate to each other by making “clicking” sounds.
Baking soda is Sodium bicarbonate. When we use baking soda it decomposes in to Sodium carbonate, water and Carbon dioxide. This Carbon dioxide gas causes puffing of mixture. But if we use old baking soda it is partially decomposed. Remaining Sodium bicarbonate decomposition is not sufficient to produce Carbon dioxide for puffing. That’s why the mixture doesn’t puffy when we use old baking soda.
Hoppers are not really puffy when we made them by using old baking powder .why is that?
Hippos have huge mouths. They are the only animals that can open their mouth to a 180 degree angle.
Because of differences in gravity, a 100kg (220 pound) person would only weigh 38kg (84 pounds) on Mars.
Every time lightening strikes, ozone is created. Which is ozone, and strengthen the ozone layer of the atmosphere.
When we start a motor vehicle it generates CO, which is a toxic gas. If we breathed a high dose of CO, we will be exposed to various kinds of diseases even one can die.
Why does it say starting a motor car in a covered garage is not a good habit?
40 to 50 percent of the body heat can be lost through the head (no hat) as a result of its extensive blood circulatory network.
The ‘Great Red Spot’ is a storm on Jupiter that has been going on for 400 years .It is so big that dozens of Earths would fit into it.
At max speed, a male kangaroo can cover up to 7 meters (23 feet) in a single bound. They could cross a basketball court in three hops.