The element given below is dull and brittle. It is:

Which of the following is a physical characteristic of a metalloid?

1. Texture
2. Malleable
3. Brittle
4. Semiconductor

How do metals differ from non-metals?

1. Metals are shiny, non-metals are dull
2. Metals are good insulators, non-metals are good conductors
3. Metals are powdery
4. Non-metals are shiny

Which of the following correctly lists the three main groups of elements from greatest conductivity to least conductivity?

1. Non-metals - Metalloids - Metals
2. Metals - Non-metals - Metalloids
3. Metalloids - Metals - Non-metals
4. Metals - Metalloids - Non-metals

All of the following are properties used to classify elements as metals, non-metals, and metalloids except:

1. Texture
2. Conductivity
3. Luster
4. Malleability

Which of the following is a property of a non-metal?

1. Conducts electricity and heats well
2. Can be hammered into thin sheets
3. Is brittle and breaks easily
4. Has a shiny, metallic luster

A student is given a sample of an unknown substance. He is asked to determine if it is classified as a metal, a metalloid, or a non-metal. He discovered that the unknown element conducted some heat and electricity, had a shiny lustre, and broke easily. This element is most likely a

1. Carbon
2. Sodium
3. Germanium
4. Mercury

All of the following would classify an element as a metal except?

1. Dull
2. Luster
3. Malleable
4. Hard

Which of these is a property of metals?