Solution - is a mixture of 2or more substances in which one dissolve the other.It is a mixture in which the solid particles spread evenly throughout the liquid.
Ex. 1 Salt in water.
2 Sugar in water.
3 Oil in water.
4 Tea
5 soil in water
Suspension -a mixture in which solid particles settle at the bottom if left undisturbed for sometime
Ex. 1.chalk in water
2.medicine
3.concrete
4.clay in water
5.oil in water
Colloids -fine particles floating in water.they do not settle at the bottom of the container even if the water is left undisturbed.
Ex. Aerosol (liquid dissolved in a gas - fog, mist, clouds)
Foam (gas dissolved in a liquid - soda (CO2 dissolved in water), whipped cream)
Solid Foam (gas dissolved in a solid - Styrofoam, plaster)
Emulsion (liquid dissolved in a liquid - butter, milk)
A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus. They are divided into metals and non-metals. Familiar examples of elements include carbon, oxygen (non-metals) together with aluminium, iron, copper, gold, mercury, and lead (metals).
A chemical compound is a pure chemical substance consisting of two or more different chemical elements[1][2][3] that can be separated into simpler substances by chemical reactions.[4] Chemical compounds have a unique and defined chemical structure; they consist of a fixed ratio of atoms[3] that are held together in a defined spatial arrangement by chemical bonds. Chemical compounds can be molecular compounds held together by covalent bonds, salts held together by ionic bonds, intermetallic compounds held together by metallic bonds, or complexes held together by coordinate covalent bonds. Pure chemical elements are not considered chemical compounds, even if they consist of molecules which contain only multiple atoms of a single element (such as H2, S8, etc.),[5] which are called diatomic molecules or polyatomic...
