Exploring the Periodic Table Elements TEKS 6.6C

Which of the following is a physical property that can help you identify a metal on the periodic table?

• Brittle and dull

• Shiny and good conductor of electricity

• Poor conductor of heat

• Usually a gas at room temperature

A student is given four elements: gold, silicon, oxygen, and neodymium. Which element is a metalloid?

• Gold

• Silicon

• Oxygen

• Neodymium

You are asked to classify an unknown element. It is shiny, malleable, and conducts electricity well. Based on these properties, to which group does it most likely belong?

• Nonmetals

• Metals

• Metalloids

• Rare Earth elements

Which of the following elements is important in modern technology because it is a rare Earth element used in making strong magnets?

• Helium

• Neodymium

• Carbon

• Sulfur

A student observes that an element is a poor conductor of electricity, is brittle, and is not shiny. Which group does this element most likely belong to?

• Metals

• Nonmetals

• Metalloids

• Rare Earth elements

Which of the following best describes the importance of silicon (a metalloid) in modern life?

• Used in jewelry

• Used in computer chips and electronics

• Used as a fuel

• Used in making steel

Which physical property would you most likely use to distinguish a metal from a nonmetal?

• Color

• Electrical conductivity

• Melting point

• Atomic number

Which of the following elements is a nonmetal that is essential for life and is found in the air we breathe?

• Nitrogen

• Iron

• Silicon

• Neodymium

A student is comparing two elements. Element X is shiny and conducts electricity, while Element Y is dull and does not conduct electricity. Which statement is correct?

• Element X is a nonmetal, and Element Y is a metal.

• Element X is a metal, and Element Y is a nonmetal.

• Both are metalloids.

• Both are rare Earth elements.

Which of the following is a property shared by most metalloids?

• They are gases at room temperature.

• They have properties of both metals and nonmetals.

• They are very reactive with water.

• They are all magnetic.