A compound is a substance formed when two or more elements are chemically combined together. It is represented by a formula. E.g. when hydrogen and oxygen are combined in 2:1 ratio respectively, water is a compound formed. H2g+12O2g→H20l
Matter can be classified into elements, compounds and mixtures. An element is a substance, which cannot be split into two or more simple forms by any known chemical process. It can also mean a substance which cannot be decomposed into a simpler substance by ordinary chemical means. There are 109 known elements, 90 occur naturally …
Below are the difference between Chemical and Physical Changes: CHEMICAL PHYSICAL New substance is form No new substance is formed Heat is evolved No heat is evolved It is not easily reversible It is easily reversible Change in mass No change in mass
Matter possesses both physical and chemical properties. Physical property is associated with physical changes while the chemical property is associated with chemical changes. Physical change is one that is easily reversible and no new substance is formed. E.g. melting of candle way. Chemical change is one that is not easily reversible and a new substance …
Matter exists in three physical states like solid, liquid and gas. Solid – It has a definite shape and volume. E.g. stone Liquid – It has no definite shape but occupies the volume of the containing vessel. Gas – It has no definite shape but occupies the whole volume of the containing vessel. E.g. air …
Matter is anything that has weight and/or mass and occupies space. Examples of matter are the plants and animals around us, the food we eat, the water we drink and also the air we breathe.