| What is combustion | rapid chemical combination of a substance with oxygen, involving the production of heat and light. |
| What is the air composed of | 78% nitrogen
21% oxygen
~1%argon, water vapour , co2
Traces of helium, neon , methane , nitrogen oxide |
| How to check for oxygen in the air | You put air in a syringe and copper pipe in between then another syringe the move the air back and forth if the copper oxides (heat it applied to it) there’s oxygen |
| What three things are needed for fire | Heat, oxygen, fuel |
| What is the carbon cycle | The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms. |
| What happens to energy in a chemical reaction | Energy is conserved so the total amount of energy at the end is the same |
| What is an endothermic reaction | Takes non heat from the surroundings |
| What’s an exothermic reaction | Gives out heat to the surrounding |
