Yes
Diffusion in solid phase is possible.
I suppose that is not possible.
The three primary ways to extinguish a fire involving solid fuel are: 1) Cooling the fire by applying water or other extinguishing agents to lower the temperature below the ignition point; 2) Smothering the fire by removing oxygen, such as using foam, blankets, or fire extinguishers; and 3) Starving the fire by removing the solid fuel source, ensuring that there is no material left to sustain combustion. Each method disrupts the fire triangle of heat, fuel, and oxygen.
Yes, it is possible for a solid to dissolve into another solid if they are miscible with each other. This means that the two solids are able to mix together at a molecular level to form a homogeneous mixture. An example of this is the dissolution of carbon in iron to form steel.
A flammable solid is classified as a material that can readily catch fire and burn when exposed to a heat source. These solids can ignite spontaneously and pose a fire hazard if not stored and handled properly.
Fire is not a state of matter as the examples you gave. Fire is a reaction. It consumes matter, changing the solid to it's components of ash(solid), water vapor(gas), and heat.
Perhaps you meant to ask whether fire is a gas, liquid, or solid. Is that what you meant?
Any solid whose melting point is lower than that of the fire. The question is ambiguous because the temperature of the fire it not stated. The sun is form of a fire but its surface temperature is several million Kelvins, nothing including steel is solid at that temperature. A candle light is around 900 degrees steel is solid at this temperature.
Yes, smoke is a collection of airborne solid and liquid particles that result from combustion or other types of chemical reactions. While fire is a common source of smoke, it is possible for smoke to exist without fire, such as in cases of industrial processes, vehicle exhaust, or volcanic activity.
Diffusion in solid phase is possible.
Fire is renewable because fire isn't like trees. When you cut down trees they are gone. Fire is renewable but trees are nonrenewable. While it is not possible to waste fire in general, it is possible to waste the materials used to make the fire. So if you are not using the fire, you are wasting energy.
Fire, before you think differently, is a form of matter. Everything is. Fire itself is in the gas state. Some people think it is a solid, but in fact it does not have the substances that make it solid (or liquid for that matter).
I suppose that is not possible.
yes
No, fire does not have a shadow because it emits light and does not block light like solid objects do.
I will run and call the fire station as quickly as possible.
No. Their fire-mechanism is only in their throat.