Combining and Separating
Why does sand settle to the bottom of the ocean, but salt mixes in? How do people get sea salt out of the sea?
Course Category: Properties of Matter
Crystallization
Could you tell the difference between sugar and salt without tasting them? Have you ever seen a crystal up close? How are crystals made?
Different Properties at Different Temperatures
Do liquids all freeze at the same temperature?
Particle Behavior – Solids, Liquids, and Gases
What are the differences between ice, water, and steam? What are the similarities between water, juice, and milk?
Force Direction of Solids, Liquids, and Gases
What is a force? Do we have force? Do solids have force? What about liquids and gases?
Viscous and Fluid + Rigid, Elastic, and Plastic
Is clay a solid even though you can change its shape? Why is it easy to pour water, but hard to pour honey?
Density
How does panning for gold work? Why is it hot at the top of a pool, and colder at the bottom?
Air Pressure
How do suction cups work? Is there anything they can’t stick to?