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Ch 19 Mouse Mischief Physical Science Elements and their Properties.

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Presentation on theme: "Ch 19 Mouse Mischief Physical Science Elements and their Properties."— Presentation transcript:

1 Ch 19 Mouse Mischief Physical Science Elements and their Properties

2 At room temperature, most metals are ____. gases liquids radioactive solids

3 The process by which solid iodine particles change directly to gas without first becoming a liquid is called ____. condensation evaporation ionization sublimation

4 Elements that form salts by combining with metals are ____. allotropes fluorides ionics halogens

5 Substances that conduct an electric current only under certain conditions are most likely to be ____. metals metalloids noble gases nonmetals

6 Different forms of the same element that have different properties because of different atom arrangements are called ____. allotropes carbons graphites halogens

7 An allotrope of carbon that is soft and can be used as a lubricant is ____. diamond graphite sand silicon

8 An allotrope of carbon that is hard and is often used in jewelry is ____. diamond graphite quartz silicon

9 Hydrogen is grouped with the alkali metals because it ____. does not readily form compounds has one electron in its outer energy level is a gas is a metal

10 A chemical family whose members exist as reactive diatomic molecules in the gaseous phase is the ____. actinide series alkali metals halogens lanthanide series

11 A chemical family whose members exist as reactive diatomic molecules in the gaseous phase is the ____. actinide series alkali metals halogens lanthanide series

12 When hydrogen reacts with the active metals, it forms a chemical bond by ____. gaining one electron losing one electrons losing two electrons sharing electrons

13 The elements in Groups 3 through 12 of the periodic table are the ____. actinides alkaline earth metals transition elements halogens

14 A family of elements that has two electrons in its outer energy level is the ____. actinides alkaline earth metals alkali metals halogens

15 Metals can be used as wire because they are ____. alloys ductile metallic shiny

16 Elements in which the outer electrons are NOT held tightly are most likely to form ____ bonds. covalent hydrogen metallic radioactive

17 Bromine is the only halogen and nonmetal that is normally a ____. gas liquid semiconductor solid

18 The only metal that is a liquid at room temperature is ____. copper mercury silver sodium

19 A synthetic element that is used in smoke detectors is ____. aluminum americium sodium technetium

20 All synthetic elements are ____. liquids needed by human body radioactive useful in making plastics

21 Cobalt, iron, and nickel are known as the ____ triad. nickel cobalt iron steel

22 Three transition elements in Group 12 of the periodic table are ____. copper, silver, and gold iron, nickel, and cobalt mercury, zinc, and cadmium neon, helium, and xenon

23 Any element with an atomic number greater than that of uranium is a(n) ____. halogen lanthanide transition element transuranium element

24 The noble gases are in ____. Group 18 Group 1 Group 13 Group 2

25 Elements that lie along the stair-step line of the periodic table are ____. liquids metals metalloids radioactive

26 The appearance of solid metals can be described as ____. dull glassy powdery shiny

27 A family of elements that contains the most reactive metals is the ____. noble gases alkaline earth metals alkali metals transition elements

28 Radioactive elements comprise a majority of the ____. actinides halogens lanthanides noble gases

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