Across
- 2. An atom that has gained or lost electrons, giving it an overall positive or negative charge.
- 3. The prefix for seven
- 5. The region around an atom's nucleus where electrons are found.
- 7. The name for oxygen in a compound
- 10. A term to describe outermost
- 11. The prefix for nine
- 13. The amount of matter in an object, measured in grams or kilograms.
- 17. A substance formed when two or more elements are chemically bonded together in fixed proportions.
- 19. _________________ attraction: The force that holds oppositely charged ions together in an ionic compound.
- 21. bond A bond formed when two atoms share a pair of electrons.
- 23. The prefix for eight
- 28. A horizontal row in the Periodic Table.
- 29. _________ molecular structure - A structure made of small molecules held together by weak forces.
- 31. The name for fluorine in a compound
- 32. ________ bond - An electrostatic attraction between a positively charged ion and a negatively charged ion.
- 33. The name for nitrogen in a compound
- 36. __________ property - A characteristic of a substance that can be observed or measured without changing its chemical identity (e.g. colour, melting point, density).
- 38. The prefix for six
- 39. __________ ionic structure - A large lattice of atoms or ions held together by strong forces.
- 40. When an object is less dense than the liquid it is in, causing it to stay on the surface.
- 41. The prefix for ten
- 44. A combination of two or more substances that are not chemically bonded and can be separated by physical means.
- 46. A negatively charged subatomic particle found in shells around the nucleus.
- 47. ________ density - A comparison of the density of a substance to the density of water.
- 48. When an object is more dense than the liquid it is in, causing it to go below the surface.
Down
- 1. A particle formed when two or more atoms join chemically through covalent bonds.
- 4. _____________ property - A characteristic that describes how a substance reacts or changes into a new substance (e.g. flammability, reactivity with acids).
- 6. The name for sulfur in a compound
- 8. The mass of a substance per unit volume (______ = mass ÷ volume).
- 9. A pattern in properties observed across a group or period in the Periodic Table.
- 12. A neutral subatomic particle (no charge) found in the nucleus of an atom.
- 14. __________ structure - The arrangement of protons, neutrons, and electrons in an atom.
- 15. _________ gas electron configuration - A stable arrangement of electrons in the outer shell, similar to noble gases.
- 16. The prefix for one
- 18. The dense central part of an atom containing protons and neutrons.
- 20. The amount of space an object occupies, measured in cm³ or m³.
- 22. A regular, repeating arrangement of ions in an ionic compound.
- 24. The prefix for three
- 25. The name for chlorine in a compound
- 26. A vertical column in the Periodic Table where elements have similar properties.
- 27. The prefix for five
- 28. ___________ Table - A chart that arranges elements by increasing atomic number and similar properties.
- 30. The prefix for two
- 34. The prefix for four
- 35. A pure substance made of only one type of atom.
- 37. The smallest particle of an element that retains its chemical properties.
- 42. An atom that has gained one or more electrons and carries a negative charge.
- 43. An atom that has lost one or more electrons and carries a positive charge.
- 45. A positively charged subatomic particle found in the nucleus of an atom.