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What is found in the nucleus of an atom? a. protons, electrons, neutrons b. protons, electrons c. protons, neutrons d. neutrons, electrons |
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Protons have ____ charges, Electons have _____ charges, Neutrons have ____ charges. a. positive, no, negative b. negative, no, positive c. positive, negative, no d. no, positive, negative |
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c. positive, negative, no |
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Most of the atom's mass is found... a. in the electrons and proteons b. in the protons and neutrons c. in the electrons and neutrons d. in the protons |
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Definition
b. in the protons and neutrons |
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The present day periodic table is arranged by _______ a. atomic number b. atomic mass c. alphabetical order d. date of discovery |
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The number of protons and neutrons are always equal in an atom. a. true b. false |
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The atomic number identifies the number of _____ in the atom a. electrons and neutrons b. neutrons and proteons c. protons and electrons |
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An isotope can be determined by looking at an atom's ____ a. atomic number b. neutrons, electrons c. protons, electrons d. protons, neutrons |
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The present day periodic table is still arranged in the same element order that Dmitri Mendeleev placed them in many years ago. a. true b. false |
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b. false he did it by atomic mass today it is by atomic number - number of protons in nucleus |
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Elements on the periodic chart contain all but one of the following a. atomic number b. atomic mass c. year of its discovery d. chemcial symbol e. name of the element f. If it is a metal, metalloid or nonmetal |
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Another name for rows on the periodic table is a. columns b. familys c. periods d. groups |
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There are 18 periods and 7 groups on the periodic table a. true b. false |
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b. false 18 groups 7 periods |
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Metalloids are found primarily on the left side of the periodic table. a. true b. false |
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b. false - near right side |
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Elements in the same group have similar characteristics. a. true b. false |
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The majority of the elements on the periodic table are Nonmetals a. true b. false |
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Malleable means a metal can be made into long wires. a. true b. false |
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b. false - hammared or rolled out |
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Copper is a ductile metal. a. true b. false |
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a. true - can be made into long wires |
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Metals usually react by _____ electrons. a. gaining b. losing |
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Group 2 is known as the ______ a. alkali metals b. lanthanides c. alkaline earth metals d. actinides e. transition metals |
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On the periodic table, what group is the most reactive? a. 1 b. 2 c. 13 d. none of these |
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The last row of elements placed below the main part of the periodic table is known as the _______ a. actinide b. lanthanide c. transuranium d. transition |
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Hydrogen is a metal because it is found on the left side of the periodic table. a. true b. false |
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Nonmetals usually lose electrons when they react with other atoms. a. true b. false |
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Nonmetals are poor conductors of electric current a. true b. false |
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Nobel gases are found in _____ a. Row 7 b. Group 17 c. Group 18 d. Group 1 |
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Carbon is a ______ a. metal b. nonmetal c. metalloid d. none of these |
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Halogens are _____ a. very reactive b. not very reactive |
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Halogens are less reactive than the noble gases a. true b. false |
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Metalloids are liquids a. true b. false |
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The alkali metals are never found uncombined with other elements a. true b. false |
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Terbium (65) is a transuranium metal. a. true b. false |
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The atomic number of carbon is 6. If its atomic mass was 14, it would be an isotope. a. true b. false |
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Electrons have a greater mass than neutrons. a. true b. false |
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Lanthanide metals are found in row 8 on the periodic table a. true b. false |
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Noble gases are highly reactive a. true b. false |
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Reactivity and corrosiion are chemical properties a. true b. false |
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