Scientists found a strange blob, buried under lots of dirt and rock. They had to decide whether this blob is a living or nonliving thing. What would be a good way to find out?
Melt it and see if it goes through a physical or chemical change
Test it in a lab to find out what atoms it is made of
Look at it under a microscope and look for cells
Poke at it with a stick to see if it moves

How do water’s relative densities as a solid and a liquid differ from that of most other substances? water’s solid and liquid forms have different densities, while most other substances have solid and liquid forms with similar densities. water’s solid and liquid forms have similar densities, while most other substances have solid and liquid forms with different densities. water’s liquid form is less dense than its solid form, while the opposite is true of most other substances. water’s solid form is less dense than its liquid form, while the opposite is true of most other substances.