Döbereiner is known for grouping elements into sets of three called _______., Octaves, Triads, Periods, Families, According to Newlands, every _______ element had similar properties., 2nd, 5th, 8th, 10th, Newlands compared his pattern to _______., Planets, Musical Notes, Seasons, Shapes, The triad concept helped scientists realize that _______ existed among elements., Randomness, Patterns, No relationships, Metales dominate, Döbereiner noticed similarities in elements’ _______., Names, Sizes, Discovery dates, Chemical Properties, Mendeleev arranged elements by increasing _______., Atomic mass, Atomic number, Atomic radius, Density, Often called as the “Father of the Periodic Table:”, John Newlands, Glenn Seaborg, Dmitri Mendeleev, Dobereiner, The Law of Octaves was an important step toward _______., Nuclear chemistry, The periodic table, Space science, Bioogy, The Law of Octaves worked best for elements up to _______., Oxygen, Calcium, Iron, Uranium, Newlands proposed the _______ of Octaves., Law, Rule, Theory, Mode, Moseley discovered that element properties depend on _______., Atomic number, Atomic weight, Color , Shape, Glenn Seaborg is known for discovering several _______ elements., Ancient, Noble, Transuranium, Alkali, Element seaborgium (Sg) was named after _______., Moseley, Mendeleev, Seaborg, Newlands, The modern periodic table has _______ periods., 7, 5, 8, 1, One limitation of Mendeleev’s table was that it was based on _______., Atomic Number, Atomic Mass, Protons, Electrons, The modern periodic table has _______ groups., 8, 6, 7, 2, Mendeleev’s periodic table was widely accepted because of his _______., Predictions, Mistakes, Music Analogy, Triads, Moseley rearranged the periodic table according to _______., Atomic Mass, Density, Ionization, Atomic Number, Moseley’s work led to the _______ periodic law., New, Old, Chemical, Modern, Who predicted and leave gaps for undiscovered elements?, John Newlands, Glenn Seaborg, Dmitri Mendeleev, Johann Dobereiner, Döbereiner’s triads showed that the atomic mass of the middle element was approximately the _______ of the other two., sum, difference, average, product, Moseley solved problems in Mendeleev’s table by using _______., Atomic number, Atomic Mass, Density, Melting point, Periodic trends are essential for understanding element _______., Behavior, Names, Shapes, History, Without periodic trends, chemistry would be more _______., Organized, Predictable, Difficult to understand, Easy, Which trend increases down a group?, Ionization energy, Electronegativity, Atomic Radius, Electron Affinity, Which of the following elements forms a triad with Chlorine and Iodine?, Chlorine, Bromine, Potassium, Bismurh, The density _________ as the atomic mass increases, increases, decreases, stays the same, none , The melting point _________ as the atomic mass increases, decreases, increases, stays the same, none, Which trend increases left to right across a period?, Atomic radius, Ionization energy, Metallic , Reactivity, The boiling point ________ as the atomic mass increases, decreases, stay the same, increases, none, Ionization energy decreases as you go _______ down a group., up, down, across, Elements in the same group have similar _______., Atomic number, Chemical properties, Mass, Colors, Mendeleev’s table grouped elements with similar _______., Names, Chemical Properties, Atomic Size, Discovery place, John Newlands arranged elements in increasing order of _______., Atomic mass, Atomic number, Density, Color, Which is an example of a Döbereiner triad?, Na, Mg, Al, Li, Na, K, H, He, Li, Fe, Co, Ni, Döbereiner’s work was an early attempt to classify elements based on _______., Color, Similar Properties, State of matter, Atomic Number, Periodic trends are important because they help us _______., Memorize element names, Predict element behavior, Count Neutrons, Discover planets, The periodic table is useful because it shows _______ in element properties, Randomnesss, Patterns, Confusion, Disorder.

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