Metals

Manganese is a shiny element that conducts heat and electricity well and can be hammered into thin sheets. Silicon is a dull, metallic element that is brittle and shatters when shaped. Which is a metal?

• Manganese

• Silicon

• Both

Which of these elements is most likely a good conductor of heat and electricity?

• hydrogen, a nonmetal gas

• carbon, a nonmetal solid

• cobalt, a metal solid

Tags

NGSS.MS-PS2-3

What are the physical properties we use to classify metals, nonmetals, and metalloids?

• reactivity, smell, and density

• physical state, hardness, and mass

• luster, conductivity, and malleability

Gold is an element that is often used to make necklaces, rings, and other types of jewelry. What property of gold makes it useful in this way?

• Gold is a conductor

• Gold is an insulator

• Gold is malleable

• Gold has a high melting point

A student investigates conductivity. The student uses a wire connected to a battery, test object, and bulb. The student knows objects with greater conductivity will cause the bulb to light more brightly. Which item will have the greatest conductivity?

• Silicon

• Phosphorus

• Iron

• Sulfur

Which property CANNOT be used to distinguish physical characteristics of metals and nonmetals?

• Conductivity

• Malleability

• Reactivity

• Luster

Which property could fill in the empty blank?

• Brittle

• Gaseous state

• Majority solid state

• Semimetals

Where would a student locate an element on the periodic table that has a shiny luster?

• Z

• Y

• X

• X or Y

Tags

NGSS.MS-PS1-1

Which best completes the table?

• Semiconductors

• Only magnetic

• Only conductors

• Semi-nonconductors

Tags

NGSS.MS-PS2-3

Which element is most likely to have the ability to be hammered into a thin sheet?

• Nitrogen

• Silicon

• Fluorine

• Calcium