Across
- 4. - Two or more atoms bonded together.
- 6. - Smallest unit of an element.
- 10. - Substance producing hydroxide ions in solution.
- 12. - Positively charged particle in nucleus.
- 13. - Neutral particle in nucleus.
- 15. - Central part of an atom.
- 16. - Mixture with uniform composition.
- 18. - Negatively charged particle orbiting nucleus.
- 19. - Substance producing hydrogen ions in solution.
- 21. - Principle that matter is not created or destroyed.
- 22. - Atom of same element with different neutrons.
- 23. - Substance speeding up reaction.
- 25. table - Arrangement of elements by atomic number.
- 26. - Substance that dissolves the solute.
- 27. - Electrons in outer shell of atom.
- 29. - Bond formed by transfer of electrons.
- 31. number - Number of protons in an atom.
- 33. - Reaction releasing energy.
- 34. - Atom with a positive or negative charge.
- 36. - Negatively charged ion.
- 37. - Force holding atoms together.
- 39. - Bond formed by sharing electrons.
Down
- 1. - Substance dissolved in a solvent.
- 2. - Mixture with non-uniform composition.
- 3. - Substance formed from two or more elements.
- 5. - Positively charged ion.
- 7. - Reaction absorbing energy.
- 8. - Substance present before reaction.
- 9. - Vertical column in periodic table.
- 11. - Number showing atom count in formula.
- 14. equation - Representation of a chemical reaction.
- 17. - Horizontal row in periodic table.
- 20. - Number before formula showing molecules.
- 24. mass - Sum of protons and neutrons.
- 25. - Substance formed after reaction.
- 28. - Pure substance of one type of atom.
- 30. - Evenly mixed homogeneous mixture.
- 32. - Combination of substances not chemically bonded.
- 35. - Substance changing color with pH.
- 38. - Bond between metal atoms.