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Download 6th Grade Science Quiz 4.1,4.2 Study Guide 4.1 Vocabulary: atom
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6th Grade Science Quiz 4.1,4.2 Study Guide 4.1 Vocabulary: atom, electron, proton, neutron, isotope, atomic number, mass number, energy level, nucleus 4.2 Vocabulary: atomic mass, periodic table, chemical symbol, period, group Study all vocabulary for each lesson, but focus on the following definitions: An ATOM is the smallest particle that can still be considered an element. The particle in an atom with a positive charge is called a PROTON. The particle in an atom with a negative charge is called an ELECTRON. The particle in an atom with no charge is called a NEUTRON. Protons and neutrons are the two particles that are in the NUCLEUS, or center, of an atom. An isotope is identified by its MASS NUMBER, which is the sum of the protons and neutrons. The periodic table is arranged in rows called PERIODS. The ATOMIC NUMBER tells the number of protons in an atom’s nucleus. Dmitri Mendeleev was credited for creating the first periodic table. *Be able to use the periodic table to answer questions about atomic symbol, atomic number, atomic mass, group and period. Examples: What is Gold’s (Au) atomic number? 79 What is the chemical symbol for the element neon? Ne What is the atomic mass of Cobalt (Co)? 58.933 How many protons does a Titanium atom contain? 22 Name the elements found in group 2. (Beryllium, Magnesium, Calcium, Strontium, Barium, Radium) An atom of which element has 39 protons in its nucleus? Yttrium Which element is located in period 3 and is in group 1? Sodium *Be able to use the key on the periodic table, to tell whether elements are classified as a metal, nonmetal, or metalloid. Examples: Sodium (Na) is a metal, Carbon (C) is a non-metal, and Arsenic (As) is a metalloid. *Know how many protons and neutrons certain isotopes have. Examples: the carbon isotope Carbon-13 has 6 protons and 7 neutrons. The Sodium-24 isotope would have 11 protons and 13 neutrons. Also, complete the practice worksheet given for homework to prepare for the quiz.
