Question

scroll down to metals vs. non-metals

1. list three physical properties of metals.
2. list three physical properties of non - metals.
3. scroll down to metalloids. what is the most common metalloid?

Explanation:

• For question 18: Metals generally have high electrical conductivity (allowing electricity to flow through them easily), high thermal conductivity (able to conduct heat well), and are malleable (can be hammered or rolled into thin sheets).
• For question 19: Non - metals often have low electrical conductivity (poor conductors of electricity), low thermal conductivity (poor conductors of heat), and are brittle (tend to break rather than deform when force is applied).
• For question 20: Silicon (\(Si\)) is the most common metalloid. Metalloids have properties intermediate between metals and non - metals, and silicon is widely used in electronics and has characteristics that make it a typical example of a metalloid.

Answer:

1. High electrical conductivity, high thermal conductivity, malleable.
2. Low electrical conductivity, low thermal conductivity, brittle.
3. Silicon (\(Si\)).