Chemistry Review

3. (*6th space should be a blank) the ratio of grams to moles for a specific substance
8. breaking a reactant into smaller products
10. element that will almost bond to itself to form a pair (ex: Oxygen
11. reaction which has O2 as a reactant and CO2+H2O as products
12. type of element likely to lose electrons
14. an atom with a charge
15. shape formed when a molecule has 2 bonds and some unshared electrons on the central atom
16. putting together reactants to form a single product
20. a covalent bond in which the bonded atoms have an electronegativity difference less than 0.4
21. the set of rules that dictate the 3 dimensional shape of molecules
22. substance held together by an ionic bond
23. a written chemical equation in which atoms of each are present on each side in equal quantities

1. a covalent bond in which the bonded atoms have an electronegativity difference greater than 0.4 but less than 2.0
2. an atom's desire for more electrons
4. a specific number of atoms selected by Avogadro to be used as a standard for counting
5. substance formed by bonding two different elements
6. bond in which electrons are transferred
7. (*5th space should be a blank) distance between nuclei of two bonded atoms
9. (*8th space should be a blank) quantity describing the difficulty of breaking a molecule apart
13. shape formed when a molecule has 2 bonds and no unshared electrons on the central atom
17. shape formed when a molecule has 4 bonds and no unshared electrons on the central atom
18. type of element likely to gain electrons
19. bond in which electrons are shared