Everything we can see and touch, and quite a lot that we can’t as well, is made of tiny particles called atoms. Some substances, like particles of this iron, contain only one kind of atom. Iron is an ...

What's the difference between a compound and a mixture? What is the difference between a compound and a mixture? Understand the differences and why mixtures are important.

Students will learn how to categorize matter as either pure substances or mixtures. Students will apply tests, based on physical properties of matter samples, to determine whether a mixture is ...

Students learn to describe and explain the process of forming a solution. Solutions: A Special Type of Mixture: Students learn to describe and explain the process of forming a solution using the terms ...

When an answer to a maths question is marked: full marks are given for the right answer (but it’s wise to show your working so you can check your answer) marks are given for working, including ...