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Study Guide for Electrons Mini-Test Tuesday, Dec. 16th Shorter Format: Multiple Choice Short Answer: draw, define, distinguish, explain, describe, categorize, infer, interpret, etc. Sources to Review for the Quiz: A. SEPUP Activities 15-17 Vocabulary from each chapter – listed on this sheet, definitions from class notes, etc. Analysis Questions from each chapter – assigned either as homework, classwork or labs Additional class notes B. Chemical Interactions 1.2 and 1.3: Answers to homework questions + Vocab Topics / Content Areas: SEPUP Chapters: 15: Families of Elements 16: Elements and the Periodic Table 17: Modeling Molecules Chemical Interactions 1.2 and 1.3 CI 1.2: Elements make up the periodic table Elements can be organized by similarities Mendeleev and predicting new elements Reading the periodic table, groups and periods Trends in the periodic table CI 1.3: The periodic table is a map of the elements The periodic table has distinct regions Most elements are metals: reactive, transition, rare earth Non metals and metalloids have a wide range of properties: halogens, noble gases, metalloids (don't worry about radioactivity and half-life yet) Vocabulary List: Atomic mass-the average mass of the atoms of an element Atomic mass number- the total number of protons and neutrons in an atom’s nucleus Periodic table- a table of the elements arranged by atomic number that shows a pattern in their properties Group- a vertical column in the periodic table of the elements, elements have similar properties Period- a horizontal row in the periodic table of the elements, elements have varying properties Family- elements that share the same properties, noble gas, halogen, alkali metals, alkaline earth metals Reactive- likely to undergo a chemical change Metals- an element that tends to be shiny, easily shaped, and a good conductor of electricity (left side) Nonmetals- an element that is not a metal and has properties generally opposite to those of metal (right side) Metalloids-an element that that has properties of both metals and nonmetals (middle) Element- a substance that cannot be broken down into a simpler substance by ordinary chemical change changes, consists of atoms of only one type Chemical formula- an expression that shows the numbers and types of atoms joined in a compound (H2O) Compound- two different types of atoms bonded together Molecule- a group of atoms that are held together by bonds so they move as one unit Atom- the smallest particle of an element that has the chemical properties of that element Chemical bond- a non-contacting force that holds atoms together, can result from attraction of opposite charges (protons to electrons, etc.) Double-bond- two atoms share two pairs of electrons Triple-bond- two atoms share three pairs of electrons Transition metals- groups 3-12, some are the earliest known metals (copper), less reactive, some are in food we eat Valence shell- the area around the nucleus that holds the electrons (2,8, etc.) Energy level- A possible level of energy that an electron can have in an atom Bohr model- A model of the atom that places protons and neutrons in the nucleus and electrons in orbits rotating about the nucleus at a great distance Mendeleev- created the first periodic table, the current table is an adaptation of his idea Electron configuration- the arrangement of electrons in an atom Lewis dot diagram- ???????? Main idea of the chapters: SEPUP 15: the element families, arranging elements based on their properties SEPUP 16: the periodic table, Medeleev (the maker of the table), how to read it (groups, periods, why the elements are in what position) SEPUP 17: Making molecules, bonding similar/ different atoms together, how many bonds different elements have, how many each have for hydrogen CI 1.2: Elements in the periodic table, why they’re in what location, what info can you get based on an elements location CI 1.3: Each part of the periodic table is a specific region (left side = metals, middle= metalloids, right side= nonmetals, reactive metals, transition metals, etc.)