This combined resource includes all the important concepts in an easy-to-understand way using simple language and vocabulary. Discover what matter is, and isn’t. Learn about solids, liquids and gases, properties and changes in matter, and the difference between a mixture and a solution. Then, explore the invisible world of atoms and molecules. Young scientists will be thrilled to learn why they are mostly empty space, then on to the periodic table of elements followed by the study of energy. Our resources are jam-packed with experiments, reading passages, and activities all for students in grades 5 to 8. Eighteen color mini posters and answer key included.