A candle flame What's a combustion reaction? When two molecules bump into each other under the right circumstances, they may exchange electrons in ways that change both molecules into new kinds [...]
Using magnifying glasses to focus sunlight and start a fire Be careful with fire! Be very careful with fire, because it can burn you, or burn down your house. If [...]
Diagram of a carbon atom Where does carbon come from? When a star has changed all of the hydrogen atoms into helium, it begins to convert the helium atoms into [...]
History of fire: San men around a campfire The first campfires Probably people were all still in Africa when they first began to use fire for cooking, about 800,000 or [...]
