Across
- 2. the length of time it takes for half of the atoms in an isotope to decay
- 4. occurs when an acid and a base react to form a salt and water
- 6. tend to form covalent bonds
- 9. diffusion through a tiny opening
- 10. atoms of the same element
- 12. vertical columns on the periodic table
- 15. a neutral particle having equal numbers of p+ and e-
- 16. donates one proton per molecule
- 17. substances that are volatile vaporize easily
- 19. temperatures measured with a thermometer
- 22. the mass of an atom (amu)
- 25. the concave or convex surface of a liquid
- 26. an atom or group of atoms that has either gained or lost e-
Down
- 1. the random movement of gas molecules from an area of higher concentration to a lower concentration
- 3. is the amount of matter in an object
- 5. a ratio that compares mass and volume
- 7. measured as half the distance between the nuclei of an atoms
- 8. the smallest particle of a covalently bonded compound
- 11. horizontal rows on the periodic table
- 13. time measured with a clock or stopwatch
- 14. negative ion
- 18. length measured with a ruler
- 20. positively charged ion
- 21. ionic compound made up of a cation from a base and an anion from an acid
- 23. is the concentration of a solution
- 24. mass measured with a balance