THIS is a very large and important work, and one which cannot fail to be useful to the scientific chemist. It is divided into several parts, and contains, or rather consists of, tables of the elements ...

Substances can exist in three states of matter - solid, liquid and gas. Substances can change states. To change the state of a substance energy must be transferred to, or from, the substance. Phew! On ...

Covalent Bond: They are formed by sharing of electrons and have low melting and boiling point. These are soluble in organic solvents and are non-conductor of electricity. However graphite and diamond ...

Heating that lasted only trillionths of a second raised a gold sample’s temperature to 19,000 K without melting it, a study suggests. Scientists say that they have heated solid gold for a fleeting ...