Metals, Nonmetals, Metalloids

The elements of the periodic table can be divided into three main categories: Metals, Non-Metals, and Metalloids.

Properties of Metals

• Metals are good conductors of heat and electricity.

• Metals are shiny.• Metals are ductile (can be

stretched into thin wires).• Metals are malleable (can be

pounded into thin sheets).• A chemical property of metal is

its reaction with water which results in corrosion.

Properties of Non-Metals

• Non-metals are poor conductors of heat and electricity.

• Non-metals are not ductile or malleable.

• Solid non-metals are brittle and break easily.

• They are dull.• Many non-metals are

gases.

Sulfur

Properties of Metalloids

• Metalloids (metal-like) have properties of both metals and non-metals.

• They are solids that can be shiny or dull.

• They conduct heat and electricity better than non-metals but not as well as metals.

• They are ductile and malleable.

Silicon

1. The Periodic table can be divided into what three categories

A. Metals, Non-Metals, and MetalloidsB. Groups, Periods, and FamiliesC. Halogens, Noble Gases, and HydrogenD. Non of the above

[Default][MC Any][MC All]

2. The properties of metals include

A. Good conductors of heat and electricityB. MalleableC. Corrode in waterD. All of the above

[Default][MC Any][MC All]

3. Metalloids have properties of both

A. Hydrogen and HeliumB. Metals and Non-MetalsC. Its parents

[Default][MC Any][MC All]

4. Properties of Non-Metals include

A. ShinyB. DuctileC. Poor conductors of heat and electricityD. Malleable

[Default][MC Any][MC All]

6. Bohr Models represent

A. The atom as a small positively charged nucleus surrounded by electrons.

B. Covalent BondsC. Paired and unpaired valence electrons in an

atom.D. Ionic Bonds[Default][MC Any][MC All]

7. The atomic number is

A. The number of neutrons in an atom.B. The number of electrons in an atom.C. The number of protons in an atom.D. The number of protons and neutrons in an

atom.[Default][MC Any][MC All]

8. The nucleus of an atom

A. A unique number that represents the number of protons in an atom.

B. Is the dense, positively charged mass located in the center of an atom.

C. A particle smaller than an atom (e.g. neutron)

D. A visual model of the most likely locations for the electrons in an atom.

[Default][MC Any][MC All]

9. If you are given the mass number and the atomic number for an atom, how would you determine the number of neutrons?

A. Subtract the atomic number from the mass number.

B. Determine the number of electrons because that will tell you the number of neutrons.

C. Determine what period the element is in.D. Count the number of valence electrons.

[Default][MC Any][MC All]

10. The Lewis Structure represents

A. The atom as a small positively charged nucleus surrounded by electrons.

B. ProtonsC. NeutronsD. Paired and unpaired valence electrons in an

atom.[Default][MC Any][MC All]