Tag: SS1 1st Term Chemistry

A mixture is made from different substances that are not chemically joined.For example powdered iron and powdered sulphur mixed together […]

OXIDATION NUMBERS It is often useful to follow chemical reactions by looking at changes in the oxidation numbers of the […]

In chemistry, a compound is a substance that results from a combination of two or more different chemical element s, […]

Isotopes Definition: Isotopes are atoms with the same number of protons, but differing numbers of neutrons. Isotopes are different forms […]

Atoms are the basic units of matter and the defining structure of elements. Atoms are made up of three particles: […]

MOLECULES AND ATOMICITY A molecule is the smallest particle in a chemical element or compound that has the chemical properties […]

Element Definition: A chemical element is a substance that cannot be broken down by chemical means. Elements are defined by […]

A material will change from one state or phase to another at specific combinations of temperature and surrounding pressure. Typically, […]

In our daily life, we come across many objects, the knowledge about which can be gained by one or more […]