Chemistry is the science of the change. Over the centuries people have heated rocks, distilled juices and probed solids, liquids and gases with electricity. From all this activity we have gained a great wealth of new material e.g. Metals, medicines, plastics, dyes, ceramics, fertilizers, fuels and much more. But this creation of new materials is … Read more

They are: 1.textElectrons have a mass approximately 1/2000th of the mass of a hydrogen atom.text 2.textElectrons have a charge of 1.602*10^-19 C (Coulombs)text 3.textThe calculated mass of an electron is 9.109*10^-31 kg. (approximately 1/1837th of a mass of a hydrogen atom.text 4.text Electrons are negatively charged particles.text

It's a big world out there! There are more insects in the world than there are humans! We don't even know half the species of insects and where they hide, so there is a major possibility that a roach or two appears out of nowhere and scares the daylight out of you! So STAY CLEAN!

This occurs not only when we exercise but many times when we have a fever or basically recovering from one. Our blood like many other fluids has an optimum temperature and pH value to make all those reactions occur in the body. When the body is subjected to stress as in this case; exercising, the … Read more

Your question is tells me that you may have a diet problem. The color and odor of urine is basically determined by one main component in urine. In healthy persons urine the main component is urea, which is a compound of ammonia. If you ever get a chance to smell a dead corpse or ammonium … Read more

To understand this question you must first consider the very basic properties of metals. Metals have different properties to both ionic and covalent compounds. As we have all heard that in metals positively charged ions are embedded in a sea of electrons. This is true as in a metallic lattice; the atoms lose their outer-shell … Read more

In a gravitational field, there is a vertical force directed downwards on all bodies called "weight" of the body. In order to raise a body to a different height, a force equal to the weight must be applied in the upwards direction. By definition, this upward force does work on the body. We say that … Read more