Crovato/Richerson
Help!
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| What element in the oxygen group is needed in trace amounts in your diet? | selenium
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| What is an element that is the most abundant metal in the earth's crust? | aluminum
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| What two elements are used with other metals to lower their melting points? | antimony and bismuth
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| Which non-meal is highly reactive? | hydrogen
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| All ________ elements are radioactive. | synthetic
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| Which alkaline earth metal is found in chlorophyll and enables plants to make food? | magnesium
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| The only metal that is not a solid at room temperature is ________ | mercury
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| In what type of bonding, are positively charged metallic ions surrounded by a cloud of electrons? | metallic bonding
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| At room temperature most metals are ____ | solid
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| Metals can be used as wire because they are ______ | ductile
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| Copper, silver, and gold are ____ metals | coinage
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| List 3 transition elements in Group 12 of the periodic table. | mercury, zinc, cadmium
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| All _____ elements are not typically found on earth | synthetic
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| Synthetic elements are found in which group? | actinides
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| Elements that lie around the stair-step line of the periodic table are ____ | metalloids
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| Which of the Group 3A elements is NOT a metal? | boron
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| Which category of elements have the property of being malleable and ductile? | metals
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| Each row in the periodic table ends with a _______ | nobel gas
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| What element is not in the iron triad? | coper
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| The most unreactive group of elements is the ________ | noble gases
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| A group of elements that have 2 electrons in its outer energy level is the _________ | alkaline earth metals
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| The bonding that occurs when positively charged ions are surrounded by a cloud of electrons is called ____ bonding | metallic
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| The ability of metals to reflect light is referred to as ____ | luster
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| An allotrope of carbon that is soft and can be used as a lubricant is ___ | graphite
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| Different forms of the same element that have different properties because of different atom arrangements are called ______ | allotropes
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| In what type of element does the nucleus break down and give off particles and energy? | radioactive
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| An allotrope of carbon that is hard and is often used in jewelry is ____ | diamond
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| Bromine is the only halogen and nonmetal that is normally a ___ | liquid
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| The elements in Group 3 through 12 of the periodic table are the _________ | transition elements
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| A synthetic element that is used in smoke detectors is _____ | americium
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| The iron triad of transition metals includes what 3 elements? | iron, zinc, and copper
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| When metals combine with nonmetals, the atoms of the metals tend to lose electrons, forming what type of bonds? | ionic bonds
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| The process by which a solid changes directly to a gas without first becoming a liquid is called _____ | sublimation
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| What often occur in nature as uncombined elements? | transition elements
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| Substances that conduct an electric current only under certain conditions are most likely to be _____ | metalloids
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| When hydrogen reacts with the active metals, how does it form a chemical bond? | by gaining 1 electron
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| A chemical family whose members exist as reactive diatomic molecules in the gaseous phase is the ____ | halogens
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| A family of elements that has 2 electrons in its outer energy level is the ________ | alkaline earth metals
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| A family of elements that contains the most reactive metals is the _____ | alkali metals
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| What happens when hydrogen reacts with active metals? | it gains one electron
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| Why is hydrogen grouped with the alkali metals? | because it has one electron in its outer energy level
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Created by:
dcrovato