Question

1. you are trying to find a good material to use as a conductor in your circuit. you know that you need a solid malleable material that conducts electricity well. which of the following would be an appropriate choice?

a hydrogen
b carbon
c iron
d fluorine

1. silicon is a semiconductor and has properties of both metals and nonmetals. what type of element is silicon?

a metal
b metalloid
c nonmetal

1. which elements are found on the right side of the periodic table?

a metals
b metalloids
c nonmetals
d water

1. which element is least likely to conduct heat and electricity?

a. o
b. po
c. si
d. ca

1. which of the given choices correctly shows the three main groups of elements listed from least conductivity to greatest conductivity?

a. metals, nonmetals, metalloids
b. metalloids, metals, nonmetals
c nonmetals, metalloids, metals
d. nonmetals, metals, metalloids

1. how would this element be classified?

a. metal
b. metalloid
c. nonmetal
d. metamorphic

Explanation:

• For question 5: Iron is a metal, which is malleable and a good conductor of electricity. Hydrogen and fluorine are gases at room - temperature and not malleable solids. Carbon (in non - graphite forms like diamond) is not a good conductor of electricity.
• For question 6: Silicon has properties of both metals and non - metals, which is the definition of a metalloid. Metals have more metallic properties (e.g., high conductivity, malleability), and non - metals have more non - metallic properties (e.g., poor conductivity).
• For question 7: Non - metals are located on the right side of the periodic table. Metals are on the left and middle, metalloids are in a diagonal - like region separating metals and non - metals, and water is a compound, not an element on the periodic table.
• For question 8: Oxygen (\(O\)) is a non - metal. Non - metals are generally poor conductors of heat and electricity. Polonium (\(Po\)) is a metalloid (some conductivity), silicon (\(Si\)) is a semiconductor (moderate conductivity), and calcium (\(Ca\)) is a metal (good conductivity).
• For question 9: Non - metals have the least conductivity, metalloids have intermediate conductivity, and metals have the greatest conductivity.
• For question 10: The properties listed (shiny luster, solid phase, good conductor of electricity, high density) are characteristic of metals. Metalloids have some metallic and non - metallic properties (not as good conductors as metals in general), non - metals are poor conductors, and metamorphic is a type of rock, not an element classification.

Answer:

1. C. Iron
2. B. Metalloid
3. C. Nonmetals
4. a. \(O\)
5. c. Nonmetals, metalloids, metals
6. a. Metal