Simple Science Experiments contains 24 experiments covering the concepts magnets, rocks, water (solids, liquids, gases), and simple machines.
Magnetic concepts presented include: Magnets attract some objects but not others, Magnets will attract some types of metal but not others, Some magnets are stronger than others, A magnet can attract metal through water, A magnet can attract metal through other objects.
Liquid concepts presented include: A liquid takes on the shape of the container it is in, Water flows downhill, Moving water can do work, We can change the form of a liquid by adding heat or cold, When water freezes it takes up more space, Ice melts (A solid can change into a liquid), Small pieces of ice will melt faster than large pieces (There is more surface area exposed to heat), There is water in the air, Water evaporates, Some objects float and some sink in water.
Machine concepts presented include: Air occupies space, Moving air can do work, Objects move more easily over a smooth surface than a rough one, Wheels can make work easier, An inclined plane makes work easier.
Rock concepts presented include: Rocks can be different sizes, Rocks are many different colors, Some rocks are smooth and some rocks are rough, Some rocks are heavier than others.