Chemistry Game by Sean McKenna

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Chemistry Game

Published on Apr 03, 2016

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SEAN MCKENNA

Guide Sheet- The periodic table consists of 18 rows and 7 columns in this game Each column is called a period Each period is represented by the quantum number "n" If your element is in period 6 then n=6 The periodic table is divided into 4 orbital blocks s, p, d, and f In this game the orbital block"f" is not used An element on the table is a square block which has its name, abbreviation, atomic number, and atomic mass The atomic number tells you the amount of protons in that element The atomic mass tells you the average mass of the element Sulfur is in Period 3 Row 16 Because it is in period 3 n=3 for Sulfur Falling a level takes you from one period to the on below it For example if you are on sulfur and fall a period you end up in level 4 element Se You will be asked to answer several questions throughout the game to earn points You will need to know various topics such as electron configuration, scientists, sig figs, changes/ properties, and noble gas shortcuts

Electron Configuration- The four blocks are s, p, d, and f they are referred to as orbitals An example of an electron configuration is 1s(2) 2s(2) 2p(6) 3s(2) 3p(6) 4s(2) 4d(5) The numbers in parenthesis stand for the number of orbital boxes in a sub unit A sub unit is another name for s, p, d, and f The beginning numbers before the sub unit stand for the period That electron configuration is for the element Manganese An easy way to understand electron configuration is to know that the 2p 2p6 stands for period 2 of block p and the 6 is be how many elements you pass in 2p To write an electron configuration you move from the top left corner left to write and down like you are reading a book

Scientists- Dalton- his atomic model was a solid, indivisible sphere Rutherford- his atomic model was a nucleus in the center filled with protons, and surrounded by electrons he conducted the gold foil experiment to prove Bohr right, but couldn't because he found the nucleus which proved Bohr wrong Bohr- atomic model consisted of orbitals surrounding a nucleus, the orbitals where rings that had electrons on them, this is proven incorrect by Heisenberg Heisenberg- found the electron cloud atomic model consisted of a proton and neutron filled nucleus surrounded by an electron cloud which is correct

Significant Figures a.k.a. "Sig figs"- Sig figs are important digits in a number For example if I have the number 0.3508 i have 4 sig figs in that number Several rules tell you which digits are significant or not Leading zeros are insignificant Sandwiched zeros are significant Non-zero digits are always significant Trailing zeros are only significant after the decimal, if there is a decimal Trailing zeros in a whole number )are not significant Here are several examples of the rules in use 1.23 has 3 significant figures because they are all whole numbers 1.023 has 4 significant figures, the zero counts because it is sandwiched 1540 has 3 significant figures because the trailing zero doesn't count because it is not after a decimal 0.003 has 1 significant figure because leading zeros are not important 3.450 has 4 significant figures because the trailing zero is significant because it is after the decimal

Changes/ Properties- Properties can either be physical or chemical Example of physical properties are, height, hair color, and weight Examples of chemical properties are temperature, ability to react and flammability Changes in a substance can also be either physical or chemical Changes such as odor, rusting, and burning are chemical Changes such as getting taller, gaining weight, and decibels are physical

Noble Gas Shortcuts- Noble gas shortcuts are a quicker way to identify an element than electron configuration but is very similar To write a noble gas shortcut you first have to know what the noble gases are and where they are on the periodic table Noble gases- Helium, Neon, Argon, Krypton, Xenon, Radon, and Ununoctium Next you must write the electron configuration for the period your element is in If your element is Arsenic then it is in period 4 To get to arsenic you have 4s(2) 4d(10) and 4p(3) The noble gas above it is Argon So you would first put the noble gas in brackets then write the electron configuration in period 4 [Ar] 4s(2) 4d(10) and 4p(3)