Can anyone please tell me about the atoms and concepts of moles? My lecturers are too boring...?

Answer 1

A mole is a unit of measurement, just like a 'dozen' or a 'pair'. You know that a dozen means 12 of something. Well, a mole is the same concept. A mole is 6.02 x 10^23 of something (molecules, atoms, apples, anything!) It's just another unit of measurement used frequently by scientists when they are speaking about large numbers.

Answer 2

how can you consider chemistry to be boring. Look up moles and atoms on the net. You will learn by doing this yourself if you find the information your lecturers are giving you so boring. Do you attend classes, and do the problems set for you. Maybe you should drop chemistry if you dont have an appitude for it. Good luck with what ever you decide to do.

Answer 3

In chemistry and physics, an atom (Greek ἄτομος or átomos meaning "indivisible") is the smallest particle of a chemical element that retains its chemical properties. (átomos is usually translated as "indivisible." Until the advent of quantum mechanics, dividing a material object was invariably equated with cutting it.) Whereas the word atom originally denoted a particle that cannot be cut into smaller particles, the atoms of modern parlance are composed of subatomic particles:

* electrons, which have a negative charge, a size which is so small as to be currently unmeasurable, and which are the least heavy (i.e., massive) of the three;
* protons, which have a positive charge, and are about 1836 times more massive than electrons; and
* neutrons, which have no charge, and are about 1838 times more massive than electrons.

Protons and neutrons make up a dense, massive atomic nucleus, and are collectively called nucleons. The electrons form the much larger electron cloud surrounding the nucleus.

Atoms can differ in the number of each of the subatomic particles they contain. Atoms of the same element have the same number of protons (called the atomic number). Within a single element, the number of neutrons may vary, determining the isotope of that element. The number of electrons associated with an atom is most easily changed, due to the lower energy of binding of electrons. The number of protons (and neutrons) in the atomic nucleus may also change, via nuclear fusion, nuclear fission or radioactive decay, in which case the atom is no longer the same element it was.

Atoms are electrically neutral if they have an equal number of protons and electrons. Atoms which have either a deficit or a surplus of electrons are called ions. Electrons that are furthest from the nucleus may be transferred to other nearby atoms or shared between atoms. By this mechanism atoms are able to bond into molecules and other types of chemical compounds like ionic and covalent network crystals.

Atoms are the fundamental building blocks of chemistry, and are conserved in chemical reactions.

For gases and certain molecular liquids and solids (such as water and sugar), molecules are the smallest division of matter which retains chemical properties; however, there are also many solids and liquids which are made of atoms, but do not contain discrete molecules (such as salts, rocks, and liquid and solid metals). Thus, while molecules are common on Earth (making up all of the atmosphere and most of the oceans), most of the mass of the Earth (much of the crust, and all of the mantle and core) is not made of identifiable molecules, but rather represents atomic matter in other arrangements, all of which lack the particular type of small-scale order that is associated with molecules.

Most molecules are made up of multiple atoms; for example, a molecule of water is a combination of two hydrogen atoms and one oxygen atom. The term "molecule" in gases has been used as a synonym for the fundamental particles of the gas, whatever their structure. This definition results in a few types of gases (for example inert elements that do not form compounds, such as helium), which has "molecules" consisting of only a single atom.

Answer 4

a mole of something is having 6.022x10^23 number of molecules of something. using moles you can tell how much of a certain atom there is.

Answer 5

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.

Poor little bored student.