Across
- 2. simplest particle of an element that retains all the properties of that element
- 5. atom or molecule with an electrical charge
- 7. attractive force between a hydrogen molecule with a with a partial positive charge and another atom or molecule with a partial or full negative charge
- 8. protein or RNA molecule that speeds up metabolic reactions without being permanently changed or destroyed
- 10. center of the atom, makes up most of the mass, contains protons and neutrons
- 11. positively charged particle
- 13. substances formed during a chemical reaction, shown on the right side of a chemical equation
- 15. the amount of solute dissolved in a fixed amount of solvent
- 16. reduce the amount of activation energy needed for a reaction to take place
- 18. compares the relative concentrations of hydronium ions and hydroxide ions in a solution, ranges from 0-14, 0 is very acidic, 7 is neutral, & 14 is very basic
- 20. 3-dimensional region around a nucleus that indicated the probable location of an electron
- 21. all of the chemical reactions that occur in an organism
- 23. solution that has a greater number of hydronium ions than hydroxide ions
- 24. solution in which water is the solvent
- 25. starting substances in a chemical reaction, shown on the left side of a chemical equation
- 27. reaction in which a reactant gains one or more electrons becoming more negative in charge
- 29. one or more substances change to produce one or more different substances
- 30. negatively charged particle
- 32. reaction in which a reactant loses one or more electrons becoming more positive in charge
- 34. substances that cannot be broken down chemically into simpler kinds of matter
- 37. mixture in which one or more substances are uniformly distributed in another substance
- 38. the H3O+ ion created when a free H+ ion reacts with a water molecule
- 40. attractive force between two particles of different substances
- 42. atoms of 2 or more elements that are combined in fixed proportions
- 43. solution that has a greater number of hydroxide ions than hydronium ions
- 44. particle that has no charge
- 46. chemical substances that neutralize small amounts of either an acid or a base added to a solution
Down
- 1. forms when 2 atoms share one or more pairs of electrons
- 3. number of protons in an atom
- 4. atoms of the same element that have a different number of neutrons
- 6. the OH- ion created when one water molecule pulls apart another water molecule
- 9. anything that occupies space and has mass
- 12. reaction in which electrons are transferred between atoms
- 14. amount of energy needed to start a reaction
- 17. the quantity of matter an object has
- 19. attractive force that holds atoms together
- 22. solution in which no more solute can dissolve
- 26. substance in which the solute is dissolved
- 28. equal to the total number of protons and neutrons of an atom
- 31. simplest part of a substance that retains all of the properties of that substance
- 33. attraction between molecules that results in the rise of the surface of a liquid when in contact with a solid
- 35. substance dissolved in the solvent
- 36. attractive force between oppositely charged ions which form when electrons are transferred from one atom to another
- 39. attractive force that holds molecules of a single substance together
- 41. molecule with unevenly distributed charges
- 45. the ability to do work