Composition Of Matter

Question 1

What is a compound?

Answer 1

Any chemical substance composed of many identical molecules.
The molecules must contain at least 2 types of atoms ( H2O is a compound while O2 is not ).

Question 2

What is a mixture?

Answer 2

Any chemical substance composed of 2 or more different molecules

Question 3

What are the 2 subtypes of mixture?

Answer 3

• Homogenous mixture: each sample of the mixture will contain the same type and number of particles. Air, sea , steel
• heterogenous mixture: non-uniform composition.