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What are the properties of metals?
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Describe the Alkali metals:
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PS CH 19 Review
DHS PS CH 19 Review
| Question | Answer |
|---|---|
| What are the properties of metals? | 1). Conduct heat and electricity 2). Luster-reflect light well 3). Malleable-can be hammered or rolled into sheets |
| Describe the Alkali metals: | softer and more reactive than other metals, 1 valence e- |
| What are the properties of Alkali metals? | 1). Highly reactive with oxygen and water 2). Combine readily with other elements 3). Has many uses |
| Describe the Alkaline Earth metals: | Not found naturally in elemental form and they have 2 electrons in their outer energy level |
| Elements found in groups 3-12 that occur often in nature as uncombined elements are called? | Transition elements |
| What is the the Iron triad? | Iron, Cobolt, and Nickel |
| In the Iron triad describe what the iron is used for: | main ingredient in steel |
| What is used in soap to soften water? | Boron |
| Mixture of a metal compound mixed with clay or rock is called? | Ore |
| When 2 nonmetals combine by sharing electrons is called? | covalent bonding |
| Metal used in photography? | Silver |
| Bromine is the nonmetal that is _____ at room temperature? | liquid |
| Elements in groups 3-12 are called? | transition elements |
| Appearance of solid metals? | shiny |
| Ability to be hammered or rolled into sheets? | Malleable |
| Diffent forms of the same element with different properties? | allotropes |
| The group whose members are gaseous and are reative diatomic molecules? | halogens |
| The type of bond where outer electrons are not tightly held? | metallic bond |
| Compared to elements found in Groups 1 & 2, transtion elements are? | more stable |
| Elements that conduct electricity under certain conditions? | metalloids |
| Any element with an atomic number greater than that of Uranium (92)is called? | transuranium element |
| Elements that conduct electricity under certain conditions? | metalloids |
| What is the main element in the human body? | Oxygen |
| Copper, silver, and gold are known as the? | coinage metals |
| Most chemically active of all elements? | Flourine |
| All synthetic elements are? | radioactive |
| When H reacts with active metals, it forms a chemical bond by? | gaining 1 electron |
| This group has 2 valence electrons? | alkaline Earth metals |
| When metals give up electrons to nonmetals and bond they are called? | ionic bonds |
| 2 atoms of the same element in a covalent bond are called? | diatomic molecules |
| What element regulates brain chemicals? | Lithium |
| In a radioactive element, this breaks down and gives off particles and energy? | nucleus |
| What elements is uded in toothpastes to prevent tooth decay? | Flouride |
| Produces red in fireworks? | Strontium |
| Process of changing directly from a solid to a gas? | Sublimation |
| Metal atom in green molecules of plants? | Magnesium |
| Co, Fe,and Ni are known as the _____. | Iron triad |
| The only metal that liquid at room temperature is? | Mercury |
| When halogens gain e- from metals they form? | salts |
| Gives color to rubies and emeralds? | Chromium |
| Used in airplanes because of its light weight? | Aluminum |
| Radioactive element in Alkali metals? | Francium |
| Allotrope of carbon that is the hardest substance known to man? | Diamond |
| Magnesium produces ______ color in fireworks? | White |
| Radioactive element found in Alkali Earth metals? | Radium |
| Metal found in your bones, statues, and churches? | Calcium |
| Family of elements that contains the most reactive metals? | Alkali metals |
| At room temperature, most metals are? | solids |
| Drawn into wires = ? | ductile |
| Semiconductor used in computers? | Silicon or Germanium |
| Makes up 90% of the universe? | Hydrogen |
| Group 18 is called? | Noble gases |
| These rare Earth metals are used to make compounds used in the motion picture industry? | Lanthanides |
| All elements in group 1 have? | 1 valence electron |
| Informal name to the ball-shaped version of Carbon? | buckeyeball |
| Synthetic element used in smoke detectors? | Americium |
| An allotrope of Carbon that can be used as a lubricant? | graphite |
| Describe 2 uses for elements found in the Lanthanides: | 1). used in the motion picture industry 2). used to produce colors in tv's |
| Describe 2 uses for elements found in the Actinides: | 1). Thorium is used in high-end camera lenses 2). Uranium is used in nuclear reators |
| Substances that can be hammered or rolled into sheets are? | malleable |
| Name the property that is used to describe the ability of a matter to reflect light. | luster |
| Substances that can be drawn into wired without breaking are? | ductile |
| Elements that are shiny and good conductors of electricity are? | metals |
| All of the elements in the actinide series are? | radioactive |
| Why are metals good conductors of electricity? | outer-level electrons are weakly held |
| The only metal that is liquid at room temperature is? | mercury |
| The element that you might find in an airplane, bat, or ladder because it is strong and lightweight is? | magnesium |
| When metal atoms share their outermost electrons with a nonmetal, the metal and nonmetal become? | more chemically stable |
| Each atom of an alkali metal has how many electrons in its outer energy level? | 1 |
| Ninety percent of all the atoms in the universe are? | hydrogen |
| Which group of elements in the periodic table is known as the halogens? | Group 17 |
| Which 7 elements exists as a diatomic molecule? | H, N, F, O, I, Cl, B |
| What type of compounds form when nonmetals share their electons with other nonmetals? | covalent |
| The most common element in the universe is? | hydrogen |
| Which group of elements in the periodic table contains only noble gases? | Group 18 |
| What element makes up 65% of your body? | oxygen |
| If a halogen gains an electron from a metal, an ionic compound called ______ is formed. | salt |
| Ionic compounds occur when nonmetals gain electrons from metals and become ____ ions. | negative |
| A property of a nonmetal would be? | brittle |
| What is the most abundant metal in the Earth's crust? | aluminum |
| How many electrons does each element in Group 15 have in its outer energy level? | 5 |
| How many electrons does each element in Group 14 have in its outer energy level? | 4 |
| What has both metallic and nonmetallic properties? | metalloids |
| How many electrons does each element in Group 16 have in its outer energy levle? | 6 |
| What element was once widely used in paint but is now no longer used because it is known to be toxic? | lead |
| All organic compounds contain the element? | carbon |
| What do we call different forms of the same element? | allotropes |
| Not naturally occuring? | synthetic |
| At room temperature most metals are? | solids |
| The process by which solid iodine particles change directly to gas without first becoming a liquid is called? | sublimation |
| Elements that from salts by combining with metals are? | halogens |
| Substances that conduct an electric current only under certain conditions are most likely to be? | metalloids |
| Different forms of the same element that have different properties because of different atom arrangements are called? | allotropes |
| An allotrope of carbon that is soft and can be used a a lubricant is? | graphite |
| An allotrope of carbon that is hard and is often used in jewelry is? | diamond |
| Hydrogen is grouped with the alkali metals because it? | has one electron in its outer energy level |
| When hydrogen reacts with the active metals, it forms a chemical bond by? | gaining one electron |
| The elements in Groups 3 through 12 of the periodic table are the? | transition elements |
| A family of elements that has two electrons in its outer energy level is the? | alkaline earth metals |
| Metals can be used in wire because they are? | ductile |
| Elements in which the outer electrons are not held tightly and are allowed to be shared among the group of atoms form what type of bonds? | metallic |
| Bromine is the only halogen and nonmetal that is normally _________ at room temperature. | liquid |
| A synthetic element that is used in smoke detectors is? | americium |
| Cobalt, iron, and nickel are known as the? | iron triad |
| Three transition elements in group 12 of the periodic table are? | mercury, zinc, and cadmium |
| Any element with an atomic number greater than that of uranium is a? | transuranium element |
| Elements that lie along the stair-step line of the periodic table are? | metalloids |
| A family of elements that contains the most reactive metals is the? | alkali metals |
| Radioactive elements comprise a majority of the? | actinides |
| When metal atoms share their outermost electrons with a nonmetal, the metal and nonmetal become? | more chemically stable |
| Because it is so reactive, which element would you not want to expose to flames? | hydrogen |
| When a metal donates electrons to a nonmetal, what type of bond occurs? | ionic |
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basmith
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