Mixing Materials

Mix dry and liquid materials, and record what happens.

Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.

What children learn in Level 45

A mixture is two or more materials put together. Rice and beans make a dry mixture, and you can still pick out each one.
Now add liquids. Sand sinks in water, oil floats on top, and salt seems to disappear.
Scientists write down what happens, so they can compare. Try it with a grown-up: stir kitchen materials into cups of water, and make a chart.
One safety rule for every lab: mix only what a grown-up gives you. Never mix household cleaners.

Georgia Standards of Excellence in Science:

S5P1.a — Plan and carry out investigations of physical changes by manipulating, separating and mixing dry and liquid materials.