Across
- 1. A small-sized number on the bottom right of the symbol. It refers to the number of atoms of the element.
- 6. The elements or molecules that you end up with after a chemical reaction.
- 7. In a combustion engine this is the stroke that compresses the gas air mixture.
- 8. A number placed in front of a chemical formula to balance a chemical equation.
- 12. In a combustion engine this is the name of the stroke that pulls a gas/air mixture into the cylinder.
- 13. A measure of the average kinetic energy of all particles that make up that objects matter.
- 14. This is the fuel source that rockets use and that doesn't produce carbon dioxide as an exhaust.
- 15. In a combustion engine this is the name of the stroke in which a combustion reaction occurs.
Down
- 2. A process in which one or more substances, the reactants, are converted to one or more different substances, the products.
- 3. a name for energy associated with a machine including the motion of a machine's parts or the machine itself.
- 4. The energy related to an object or particles motion.
- 5. A type of chemical reaction that requires a fuel, oxidizer, and source of heat. This type of reaction produces heat, water vapor, and carbon dioxide.
- 9. When energy is used to move an object from one place to another.
- 10. The total energy associated with the temperature of an object, or the movement of microscopic particles that make it up.
- 11. The elements or molecules that you start with in a chemical reaction.
- 16. In a combustion engine this is the stroke that pushes all of the exhaust out of the cylinder.