Across
- 2. compound made up solely of carbon and hydrogen
- 6. Energy stored in the bonds of chemical compounds
- 7. equire an input of energy in the form of heat, light, or electricity
- 8. a multiplier or factor that measures some property
- 10. species formed from chemical reactions process that involves rearrangement of the molecular or ionic structure of a substance
- 13. chemical reaction that absorbs heat from its environment
- 14. reaction in which one element is substituted for another element in a compound
- 15. a list of reactants on the left and arrow symbol a list of products on the right
Down
- 1. the positive and negative ions of two ionic compounds exchange places to form two new compounds
- 3. reactions that occur when two different atoms or molecules interact to form a different molecule or compound
- 4. any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron
- 5. something undergoes change during a reaction
- 9. chemical reaction in which less energy is needed to break bonds in the reactants than is released when new bonds form in the products.
- 11. a standard scientific unit for measuring large quantities of very small entities such as atom
- 12. ratio between the mass and the amount of substance (measured in moles)