There are key parts to the periodic table that need to be discussed, so we can understand how fireworks turn different colors:
- Valence Electrons
Question: Using the periodic tables below, would you classify the following as a metal, metalloid, non-metal or none of these? (Hint: If the name has an -ide at the end, you will want to change it to -ine, so it matches the periodic table. For example, chloride will be chlorine on the periodic table.)
Properties of Metals
Metals have the following characteristics, but there are exceptions:
- Metals are malleable which means metals can be pounded into shapes.
- Metals are ductile which means metals can be pulled into wire.
- Metals can conduct electricity and heat
- Metals are solid at room temperature
- Except Mercury (Hg)
- Metals are shiny and solid under normal conditions.
Properties of Metalloids
Metalloids sometimes display characteristics of metals, sometimes metalloids display characteristics of non-metals, and sometimes metalloids have their own unique characteristics. Overall, the properties of metalloids generally fall somewhere between the metals and non-metals. For example, a metalloids may be a little shiny, or a moderate conductor of heat.
Properties of Non-Metals
Non-Metals have the following characteristics, but there are exceptions:
- Found on the right side of the periodic table.
- Most Non-metals are gases at room temperature
- A few are solids
- Bromine is a dark-red liquid
- They are poor conductors, NOT shiny or hard.
- They are brittle
- They are dull in color in solid form
- The density, melting points, and boiling points are much lower than metals.
Question: You classified each one of the following as a metal, metalloid, non-metal or none of these? For those you classified as "none of the these," do they match any of the polyatomic ions listed to the right? (NOTE: Don't worry about what a polyatomic ion is. Only identify if it is on the list.) Which ones are polyatomic ions?
Parts of the Periodic Table
Watch the video below.