Does it feel like a solid, liquid, or gas? Leave the shaving cream blob out overnight. Look at it very closely the next day. How has it changed? Leave it for a few more days. Has its state changed?

Substances can exist in three states of matter - solid, liquid and gas. Substances can change states. To change the state of a substance energy must be transferred to, or from, the substance.

Lithium-ion batteries have been a staple in device manufacturing for years, but the liquid electrolytes they rely on to ...

It changes from water (liquid) to ice (solid). Explain that another change in state is when liquid water cools enough and freezes to form ice. Instead of changing from a liquid to a gas, like in ...