simplified form of matter which cannot be decomposed by ordinary chemical means

the most abundant element in Earth’s crust and water

easily shaped coz it melts when heated

comprises 78% of the air

The system of chemical symbols was proposed by the great Swedish chemist________

pure substance that can be broken down by a chemical change into simpler substance with fixed mass ratio

this element is a gas that is mainly used for disinfection.

commonly called salt, is one of the best preservatives.

form of matter that cannot be separated into two different species by any physical means