Elements and the Periodic Table
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are the three main parts of an atom? | proton, neutron, electron
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| Where are the protons located in an atom? | nucleus
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| Where are the neutrons located in an atom? | nucleus
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| Where are the electrons located in an atom? | electron cloud surrounding the nucleus
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| The nucleus contains most of the an atoms ____? | mass
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| Tell why an atom is neutral. | In an atom there is an equal amount of protons (+) and electrons (-). The charges balance each other out, making an atom neutral.
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| What is the atomic number of an atom? | the number of protons in the nucleus of an atom
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| The modern periodic table is arranged by ________________? | atomic number
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| What are the three main catergories of the elements? | metals, non-metals, and metalloids
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| Columns on the periodic table are called ________________ | groups or families
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| Rows on the periodic table are called ___________________? | periods
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| What charge does a proton have? | (+)
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| What charge does a neutron have? | (o)
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| What charge does an electron have? | (-)
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| How many electrons can each shell hold? | First-2 electrons Second-8 electrons Third-8 electrons for first four periods
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| What is the atomic number? | The number of protons in the nucleus of an atom
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| What is the atomic mass? | The number of protons and neutrons added together in an atom.
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| What do periods tell you? | number of energy levels
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| What do columns tell you? | number of valence electrons
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| What are some qualities of alkali metals? | soft, shiny, malleable, ductile, never found uncombined in nature, 1 valence electron
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| What are some qualitites of alkaline earth metals? | soft, shiny, malleable, ductile, never found uncombined in nature, 2 valence electrons
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| What are the two most common alkaline earth metals? | magnesium and calcium
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| What are some qualitites of the transition metals? | shiny, malleable, ductile, most commonly known, used to make jewelery and coins
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| What are some qualities of the boron family? | 3 valence electrons, most metals, boron is a metalloid.
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| What are some qualities of the carbon family? | 4 valence electrons, contains matals metalloids and nonmetal (carbon)
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| What are some qualitites of the nitrogen family? | 5 valenece electrons, contains metals, nonmetals, and metalloids
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| What are some qualities of the oxygen family? | 6 valence electrons, reactive, contains metals, nonmetals, and metalloids
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| What are some qualitites of the halogens? | very reactive, non-metals, 7 valence electrons, salt forming
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| What are some qualitites of the noble gases? | exist as gases, non-metals, 8 valence electrons (full) non reactive, Helium (He) has 2 valence electrons (full)
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| What are some qualitites of the rare earth metals? | some are radioactive, conduct electricity, silvery, white metals
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| What are some qualities of metals? | ductile, malleable, shiny, reactive, good conductors of heat and electricity.
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| What are some qualitites of non metals? | poor conductors, dull, brittle, not malleable, not ductile
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| What are some qualitites of metalloids? | can be shiny or dull, better conductors than non metals but not as well as metals, malleable, ductile
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| What are some qualities of oxygen? | most abudant element element in the earth's crust, extremeley reactive, combines with almost all elements
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| What are some qualitites of nitrogen? | makes up 78% of earths atmosphere, non metal
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| What are some qualitites of carbon? | basis of life, non metal, there is an entire branch of chemistry devoted to carbon compounds called organic chemistry
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| What are some qualitites of helium? | lightest gas besides hydrogen, non metal, non reactive
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| What are some qualitites of hydrogen? | gas at room temp., has a class of its own, one proton one electron and one energy level
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| What are some qualitites of aluminum? | most abudant metal in earths crust
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| What is a molecule composed of two atoms? | diatomic molecule
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| What type of oxygen do we breathe? | O2 (diatomic molecule)
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| Who founded the periodic table? | Mendeleev
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| How are the elements arranged on the periodic table? | by atomic number
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| What does ductile mean? | can be pulled out, or drawn, into a long wire
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| What does malleable mean? | can be hammered into flat sheets
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