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| Question | Answer |
| How was the original periodic table organized? | atomic mass |
| Who came up with the term "atomos" as the smallest, indivisible piece of matter?2 | Democritus |
| How many energy regions does an atom of Ca have?3 | four |
| What group/family is highly reactive and always in compounds?4 | alkali metals |
| What are 2 pure substances?5 | elements&compounds |
| How many valence electrons does an atom of Silicon have?6 | four |
| What bond forms when atoms that share valence electrons?7 | covalent |
| How many neutrons does an atom of Chlorine have?8 | eighteen |
| What subatomic particle has a negative charge?9 | electron |
| What is the symbol for Lead?10 | Pb |
| What can you predict about an element if you know its location on the PT?11 | properties |
| Is Germanium a metal, nonmetal, or metalloid?12 | metalloid |
| What group/family rarely forms compounds?13 | noble gases |
| What is the most reactive nonmetal group/family?14 | halogens |
| What do chemical formulas represent?15 | compounds |
| What type of bond is formed between a metal & nonmetal?16 | ionic |
| Two or more different elements combine to form a ?17 | compound |
| What is formed by particles in a random ratio?!8 | mixture |
| What rule states that atoms want to have 8 valence electrons to be stable?19 | octet rule |
| Why might the atoms in a molecule be drawn in different sizes?20 | larger if more #energy regions |
| Why does an atom have no charge?21 | pos&neg charges equal |
| Whose atomic model contains protons, electrons,&neutrons?22 | Chadwick |