Atoms and Bonding

3. Group 1. Solids with only 1 valence electron
7. The smallest unit of matter
8. The force of attraction that holds two atoms together
10. A type of bond resulting from the attraction between positive and negative ions
11. A reaction where energy is released, more bonds are broken, and the surroundings are hot
13. A type of reaction where one element replaces another
15. A positively charged particle found in the nucleus
20. An atom or a group of atoms that has an electric charge
21. What you start with in a reaction
23. A bond that forms when atoms share electrons
25. A negatively charged particle surrounding the nucleus
27. A substance made up of two or more elements
28. A metal that has the ability to form thin sheets is considered...
29. A type of reaction where multiple reactants form a single product
30. A neutrally charged particle found in the nucleus
31. Group 18. Unreactive gases often used for bright lights in signs
32. The temperature at which something melts

1. A metal that has the ability to form thin wires is considered...
2. Group 17. Gases that all have 7 valence electrons
4. The amount of energy needed for a chemical reaction to take place
5. The law that states that matter can neither be created or destroyed in a chemical reaction
6. A solid that forms when two solutions are mixed
9. An electron found in the outermost layer is called a...
11. A single type of an atom. All atoms in this category have the same number of protons
12. A type of covalent bond with unequal sharing of electrons
14. A chemical that speeds up a reaction
16. A bond that forms between two metals
17. A tiny, positively charged region at the center of the atom
18. What you end with in a reaction
19. A reaction where energy is absorbed, more bonds are formed, and the surroundings get cold
22. A type of covalent bond with equal sharing of electrons
24. A type of reaction where one reactant breaks down into multiple products
26. A type of reaction that always produces water and carbon dioxide