Question

How is a compound different from an element 2.3 lesson check?

Answer 1

1. Element: Element are pure substance consist of same type of atoms
2. Compound: Form by combination of atoms of different elements.

Distinguish features:

• Compounds represented by chemical formula while elements are represented by symbols.
• Compounds have fixed ratios of atoms of different elements while in elements are distinguished by atomic no.
• Compounds can be converted into simple substance by chemical methods but the elements cant be converted into simpler substance by means of chemical methods.

Example:

• Water (H2O) is a compounds.
• Iron (Fe) is an element.

Summary:

• When two or more elements are mixed then compounds are formed.