Chapter 16 Review Test Questions – Flashcards
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| How do valence electrons affect the reactivity of elements? |
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| because they determine if an atom shares, transfers, or accepts electrons from another atom |
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| How does reactivity change as we move across the periodic table? |
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| From left to right, the reactivity decreases. |
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| Where are metals located on the periodic table? |
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| groups 1 thru 12 |
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| Where are nonmetals located on the periodic table? |
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| They are located to the right of the zig-zag line |
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| Where are metalloids located on the periodic table? |
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| right between the metals and nonmetals |
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| Why is atomic mass usually not a whole number? |
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| because it is an average of one mass of an element which would be small and a varying number. |
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| What are properties of alkali metals? |
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| highest reactivity, soft, and shiny |
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| What are the properties of alkaline earth metals? |
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| high reactivity, hard, and good conductors |
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| What are the properties of transition metals? |
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| hard, shiny, and good conductors |
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| How many valence electrons are in the alkali metals, alkaline earth metals, halogens, and noble gas families? |
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| 1,2,7, and 8 valence electrons |
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| Which group on the periodic table contains the most elements? |
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| Transition metals |
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Where is the proton located in an atom and what is its charge? |
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| in the nucleus, and + charge |
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| Where is the neutron located in an atom and what is its charge? |
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| in the nucleus, no charge |
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| Where is the electron located in an atom and what is its charge? |
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| outiside the atom in the shell/orbital has a - charge |
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| How do you find the number of protons and neutrons in an atom? |
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| by looking at the atomic number |
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| How do you find the number of neutrons in an atom? |
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| Atomic mass number- Atomic number= # of neutrons |
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| How do you find the weight of an atom? |
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| Add the number of protons and neutrons together. |
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| Group whose elements are similar; it's difficult to find differences between them. |
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| Transition metals |
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| True or false? An element's properties can be predicted from its location un the periodic table. |
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| True |
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| True of false, metals are liquid at room temperature because of their low boiling points. |
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| False, metals are solid at room temperature because of their high boiling points. |
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| What are two important alkali metals? |
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| Sodium and Potassium |
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| What are the important alkaline earth metals? |
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| magnesium and calcium |
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| How many nonmetals are there total? |
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| 17 |
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| Nonmetals are _______ at room temperature because of their _______ boiling point. |
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| gases, low |
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| When metals and nonmetals react, valence electron move from the ______ atoms to the ______ atoms. |
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| metal, nonmetal |
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| What is the simplest element? |
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| Hydrogen |
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