Elemants And Compounds

Question 1

Define element, compound and mixture in terms of atoms.

Answer 1

Element - is a pure substance consisting of only one type of atom.

Compound - is a pure substance composed of two or more different types of atoms chemically bonded together in a fixed ratio.

Mixture - is a combination of two or more substances (elements or compounds) that are physically combined but not chemically bonded.

Question 2

Describe that the melting and boiling points of pure substances and mixtures

Answer 2

Pure substances - fixed melting and boiling points

Mixtures - range of melting and boiling points