general chemistry help high school

Halogens have high electron affinity values and therefore they have strong tendency to take up the electro..

The process of breaking higher hydrocarbons with high boiling points into a variety of lower hydrocarbons that are more volatile (low boiling), is called cracking (or pyrolysis). For example, a higher hydrocarbon C 1 0 H 2 2 splits according to the reaction. C 1 0 H 2 2 C 8 H ..

According to wave mechanics, we cannot simply say that the electron exists at a particular point but we talk about certain regions in space around the nucleus where the probability of finding the electron is maximum. Such regions are expressed by mathematical expressions and are called orbital wave..

Concept of Orbital - According to wave mechanics, we cannot simply say that the electron exists at a particular point but we talk about certain regions in space around the nucleus where the probability of finding the electron is maximum. Such regions are expressed by mathematical expressions and ar..

. When dissolved in water, the ions are separated. The water molecules break the strong electrostatic force of attraction. This results in the formation of free mobile ions. To conduct electricity, free mobile ions are required. In the molten state too, the ions are separated from each other. The s..

The heat changes in chemical reactions are measured with the help of calorimeters. Depending upon the requirements of experiments different types of calorimeters are used. In general, reactions taking place at constant volume and involving gases are carried out in a closed conta..

. By supplying enough energy, it is possible to remove an electron from an atom. The element is first brought into the vapour state. Then the electron is removed by supplying energy equivalent to the ionization potential. In referring to the Periodic table of ionisation potentials (in electron volt..

These acids contain three ionizable hydrogen in its molecule. It is denoted by H 3 A. Example: H 3 PO 4 H 3 A SO 4 etc. In all these acids, the primary ionization constant (K 1 ) is stronger than the secondary (K 2 ), which is much stronger than the tertiary (K 3 ) ionization constant. This is b..

The first ionization energies of group 13 elements are less than the corresponding members of the alkaline earths. Explanation: The first electron in the case of group 13 elements (ns 2 np 1 ) is to be removed from p-orbital while in case of elements of group 2; the electron has to be removed from..

Photosynthesis and Energy - Energy for life processes basically comes from the sun. During photosynthesis, green plants absorb energy from the sun to make glucose and oxygen from carbon dioxide and water. Photosynthesis is a complex process which occurs in a sequence of steps leading to the net rea..