Across
- 2. Having a relatively low concentration of hydrogen ions or having a pH greater than 7
- 4. In an atom, the core of protons and neutrons; in a eukaryotic cell, the organelle that contains most of the DNA and directs most of the cell's activities
- 9. A chemical structure composed of one or more atoms
- 13. Amount of energy required for a chemical reaction to start and to continue on its own
- 14. The volume and shape of a substance which is determined by the rate at which the atoms or molecules of the substance move
- 16. The process of breaking chemical bonds, forming new bonds, or both
- 20. A fundamental property of an object generally regarded as equivalent to the amount of matter in the object
Down
- 1. Any substance that increases the concentration of hydroxide ions when added to a water solution
- 3. A reaction that involves a net absorption of free energy
- 5. A numeric range that quantifies the relative concentrations of hydronium ions and hydroxide ions in a solution
- 6. A measurement of the amount of solute dissolved in a fixed amount of solvent
- 7. A bond that forms when two atoms share one or more pairs of electrons
- 8. A reduction-oxidation reaction in which electrons are transferred between atoms
- 10. A catalyst, usually a protein, in living systems
- 11. The energy in a system available for work
- 12. An ion consisting of a protonated water molecule and present in all aqueous acids
- 15. A compound formed by a chemical reaction
- 17. A substance that ordinarily cannot be broken down chemically to form simpler kinds of matter
- 18. An atom or a compound with a net electrical charge
- 19. The number of protons in an atom