Extra Credit- Crossword

Edit Answers
12345678910111213141516171819202122232425262728
Across
  1. 3. oxide / a compound containing a metal chemically combined with oxygen
  2. 4. / a mathematically described region around a nucleus in an atom or molecule that may contain zero, one or two electrons
  3. 7. pair / a pair of electrons involved in a covalent bond
  4. 9. / one of the basic substances that are made of atoms of only one kind and that cannot be separated by ordinary chemical means into more simple substances
  5. 10. / a large amount of something in one place
  6. 12. / a pure substance that is composed of two or more atoms chemically combined in a specific way
  7. 14. number / an integer that approximates the mass of an isotope and designates the number of nucleons in the nucleus
  8. 16. / something that is the result of a process
  9. 18. / an atom or group of atoms that has a positive or negative electric charge from losing or gaining one or more electrons
  10. 19. / a chemical compound formed when part of an acid is replaced by a metal
  11. 21. / made from or containing material that does not come from plants or animals(no carbon)
  12. 23. / the central part of an atom that is made up of protons and neutrons
  13. 24. / the ability of an element to form ions in more than one way, depending on the chemical reaction it undergoes
  14. 27. compound / compounds that are composed of positive and negative ions
  15. 28. / a chemical substance in animals and plants that helps to cause natural processes
Down
  1. 1. electron / a single or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of the atom
  2. 2. / a chemical with a sour taste that forms a salt when mixed with a base
  3. 5. / a substance that changes when it is combined with another substance in a chemical reaction
  4. 6. / the smallest particle of a substance that can exist by itself or be combined with other atoms to form a molecule
  5. 8. / a substance that contains only hydrogen and carbon
  6. 10. / a number that is used to measure some property or characteristic of a substance
  7. 11. bond / a chemical bond formed between atoms by the sharing of electrons
  8. 13. / a substance that causes a chemical reaction to happen more quickly
  9. 15. / the smallest possible amount of a particular substance that has all the characteristics of that substance
  10. 17. element / a pair of atoms of the same element that are joined by covalent bonds
  11. 20. / a very small particle of matter that is part of the nucleus of an atom that has a positive electrical charge
  12. 22. / not able to affect other chemicals when in contact with them; not chemically reactive
  13. 25. shell / the outermost shell that contains electrons
  14. 26. metal / a chemical element that lacks the characteristics of a metal