Periodic Table2 Student Notes Date ______________________Name ___________________________ The Periodic Table is an organized chart of all the _______________________ that exist. Each element tile will give you important information about the element. You have a periodic table in your agenda planner; your science teacher will also provide you with a copy. • Scientists have discovered more than ________ elements. • ______________ of these elements are naturally occurring LABEL THE TILE BELOW : 17 ClChlorine 35 • Atomic number = number of _________________________. (Usually the number of electrons too!) • Atomic Mass = number of protons + ___________________________. • Atomic Symbol = One or two letters which represent that element. Do all of the elements have the first 2 letters of their name? Discuss!! In the periodic table, elements have something in common if they are in the same period (row). Rows go across! Observe the table discuss a pattern you see. ______________________________________________________ The elements in a group (columns) have the same number of electrons in their outer orbital. DEFINITIONS: • Orbital or energy level- Shell where electrons travel. • Period- row in the periodic table. • Group – column in periodic table • Nucleus – protons and neutrons hang out here. Center of atom! o Review from unit 1, basics of atomic orbitals. .A shell is sometimes called an orbital or energy level. Shells are areas ______________________________________. The center of the atom is called the ___________________. Electrons travel in something called _____________________. Look at you periodic table and draw the carbon atom. Include protons, neutrons, electrons, and label the nucleus.
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