liquid
a feather is a solid
Solid in solid: metal alloys. Liquid in liquid: vinegar dissolving in water. Gas in gas: air. Solid in liquid: salt dissolving in water. Liquid in solid: mercury absorbed by gold. Gas in liquid: carbon dioxide dissolving in soda. Solid in gas: smoke particles in air. Liquid in gas: water vapor in air. Gas in solid: hydrogen absorbed by palladium.
* solid to liquid: melting* liquid to solid: freezing* liquid to gas: vaporization* gas to liquid: liquefaction* solid to gas: sublimation* gas to solid: deposition
A solid.
On Earth.
Water can exist as a solid, liquid, and gas on Earth due to its varying temperatures and atmospheric conditions.
If by "earth" you mean dirt, then solid. If by "earth" you mean our planet Earth, then it is liquid, solid, and gas. Our planet has multiple layers. The inner core is a solid. The outer core is molten (semi-liquid), the mantle is solid, and the atmosphere is a gas.
Solid
liquid
evaporation solid to liquid - melting liquid to gas - evaporation gas to liquid - condensation liquid to solid - freezing solid to gas and gas to solid - sublimation
Is a pencil a solid liquid or gas
a feather is a solid
There are three basic states of matter: solid, liquid, and gas. The number of combinations possible from these states is 3! (3 factorial), which equals 6. The six possible combinations are solid-liquid-gas, solid-gas-liquid, liquid-solid-gas, liquid-gas-solid, gas-solid-liquid, and gas-liquid-solid.
Solid in solid: metal alloys. Liquid in liquid: vinegar dissolving in water. Gas in gas: air. Solid in liquid: salt dissolving in water. Liquid in solid: mercury absorbed by gold. Gas in liquid: carbon dioxide dissolving in soda. Solid in gas: smoke particles in air. Liquid in gas: water vapor in air. Gas in solid: hydrogen absorbed by palladium.
evaporation solid to liquid - melting liquid to gas - evaporation gas to liquid - condensation liquid to solid - freezing solid to gas and gas to solid - sublimation
No. Neptune is a planet. It's some combination of all three.