Chemistry
All pure substances have:
- the same physical state
- the same colour
- the same composition
- a definite set of properties
Related Questions
Sugar is a compound which consists of the elements:
- carbon and hydrogen
- hydrogen and oxygen
- carbon, hydrogen and oxygen
- hydrogen, carbon and sulphur
Sulphur and carbon are:
- metals
- non-metals
- metalloids
- noble gases
The most abundant elements in the universe are:
- neon and argon
- hydrogen and helium
- aluminium and copper
- oxygen and nitrogen
The symbol of which of the following elements is derived from its Latin name ?
- Cobalt
- Copper
- Calcium
- Chlorine