Atoms and the Periodic Table

Vocabulary Match each term with its definition atom smallest particle of matter nucleus center of an atom proton positive subatomic particle neutron neutral subatomic particle electron negative subatomic particle atomic number number of protons in an atom atomic mass average mass of all atoms of an element mass number the number of protons and neutrons in one atom Period a row on the Periodic Table Group a column on the Periodic Table Where would you find the atomic number of an atom? add the protons and neutrons add the protons, neutrons and electrons look on the Periodic Table Where would you find the Mass Number of an atom? add the protons and neutrons add the protons, neutrons, and electrons look on the Periodic Table Where would you find the Atomic Mass of an element? add the protons and neutrons add the protons, neutrons, and electrons look on the Periodic Table Find Indium (In) on the Periodic Table. (It's #49) Without drawing the atom, how many energy levels does it have? 1 3 5 7 Find Indium (In) on the Periodic Table. (It's #49) Without drawing the atom, how many electrons are in its outer energy level? 1 3 5 7 Using your Periodic Table... Fill in the blanks. You will use the following as answers. If the answer is a number, but is NOT a whole number, use TWO decimal numbers (ex - 40.08). If the answer is the name of an element, make sure to format it as follows: Name-# (The number should be the mass number) 7 7 7 7 14 14.01 Oxygen-15 16.00 7 8 8 75 74.92 Arsenic-75 33 33 Use the following information to answer the rest of the questions. A particular atom has 11 protons, 12 neutrons, and 11 electrons. What is its atomic number? 11 12 23 22.99 What is its mass number? 11 12 23 22.99 What is its atomic mass? 11 12 23 22.99 What Group is it in? 1 2 3 4 What Period is it in? 1 2 3 4 How many energy levels does it have? 1 2 3 4 How many electrons are in its outer level? 1 2 3 4 What is the name of the element? sodium magnesium titanium vanadium