Science periodic tab
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| One atom of sulfur with an isotopic mass number of 34 has 18 neutrons. 34 (total) - 16 (protons) = 18 (neutrons). What substance is an example of an element? | copper
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| Copper is an element, the others are all compounds, or a combination of several elements. In atoms, electrons surround the nucleus in | specific energy levels.
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| An atom of hydrogen consists of one _______________ surrounded by one _________________. | proton, electron
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| At the center of every atom lies a small, dense ____________ that is positively charged | nucleus
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| An atom of the element ____________has an average atomic mass of about 16 amu. | oxygen
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| An equal number of protons and neutrons in an atom typically results in an atom that is | radioactively stable
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| What is an example of an element? | silver (Ag)
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| Elements in the same group/family of the periodic table are similar in what way? | They have the same number of valence electrons.
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| An atom of calcium-48 and an atom of calcium-47 differ in | number of neutrons
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| Which part of the atom cannot have its location accurately determined and is modeled by a cloud around the center of the atom? | electron
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| Which is MOST LIKELY a solid at room temperature? | potassium
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| When studying the halogens (group 17) on the periodic table, how does the number of the valence electrons change as the energy level is increased? | The total number of valence electrons does not change, it remains 7.
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| What element behaves MOST like magnesium? | Sr
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| Based on its location in the periodic table, we know that ALL BUT one property applies to the element radon. Which property does not apply to radon? | synthetic
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| The atomic number of magnesium is 12. This means that its nucleus must contain | 12 protons and no electrons
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| Protons are positively charged and repel other protons. Which other particle is found in the nucleus and separates protons so that the strong force can hold the nucleus together? | neutrons
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| The element sodium has an atomic number of 11 and a mass number of 23. How many protons, neutrons, and electrons does one atom contain? | 11p+, 11e-, 12no
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| Which statement about atomic structure is incorrect? | Protons and electrons have the same mass.
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| The _________ contains the majority of the mass of the atom but is much ________ than the atom. | nucleus, smaller
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| All the elements of a family in the periodic table have what feature in common? | They all have similar chemical properties.
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| ) An atom with an atomic number of 12 and a mass number of 25 can best be described by which of these?. | An atom that contains 12 protons and 13 neutrons
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| Elaborate what knowing that carbon-14 has an atomic number of 6 tells us about the atom. | Carbon-14 contains 6 electrons, 6 protons, and 8 neutrons.
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Created by:
kristikee