Across
- 3. reaction that involves O2 as a reactant and typically CO2, H2O and heat as products
- 5. phase change from solid to gas
- 7. 6.02x10^23
- 10. row on the Periodic Table
- 11. positive particle in an atom
- 13. elements and compounds are examples of ___; has a chemical formula
- 14. type of reaction in which two ions swap “partners” to form 2 new compounds
- 16. system absorbs heat
- 17. subatomic particle with no charge
- 18. diagram that shows all electrons in an atom or ion on rings
- 20. theory that defines an acid as a proton donor
- 21. reactant that controls the amount of product that can be produced in a chemical reaction
- 23. acid that ionizes completely in solution
- 27. type of bond formed between C and H
- 28. system releases heat
- 29. type of bond formed between Na and Cl
- 30. theory that defines a base as producing OH- in water
Down
- 1. substance with a pOH less than 7
- 2. diagram that shows the valence electrons in an atom or ion
- 4. atom of an element with a varying number of neutrons
- 6. type of mixture in which parts cannot be distinguished
- 8. ratio of actual yield to theoretical yield
- 9. most dense phase of matter
- 12. ratio of any two parts of a balanced chemical equation; includes coefficient and formula
- 15. measure of concentration; ratio of moles of solute to to volume (in L) of solution
- 19. shows simplest ratio of atoms in a compound
- 22. a measure of the kinetic energy of molecules
- 24. ratio of mass to volume
- 25. formed when an atom gains or loses electrons
- 26. measure of the acidity/basicity of a substance; calculated as -log[H+]