Here are 8 physical properties of metals and non-metals:
Metals:
1. Luster: Metals have a shiny appearance, reflecting light well.
2. Malleability: Metals can be hammered into thin sheets without breaking.
3. Ductility: Metals can be drawn into wires.
4. Conductivity: Metals are excellent conductors of heat and electricity.
5. Density: Metals generally have high density, meaning they are heavy for their size.
6. Melting Point: Metals typically have high melting points, requiring a lot of energy to melt.
7. Sonorous: Metals produce a ringing sound when struck.
8. Solid State (at Room Temperature): Most metals are solid at room temperature, except for mercury which is a liquid.
Non-metals:
1. Dull: Non-metals lack the shiny appearance of metals and appear dull.
2. Brittle: Non-metals are often brittle and shatter easily when hammered.
3. Poor Conductivity: Non-metals are generally poor conductors of heat and electricity.
4. Low Density: Non-metals typically have lower densities compared to metals.
5. Variable Melting Points: Non-metals have variable melting points, some are solid, some are liquid, and some are gases at room temperature.
6. Not Sonorous: Non-metals do not produce a ringing sound when struck.
7. Variable States of Matter (at Room Temperature): Non-metals can exist in solid, liquid, or gas states at room temperature.
Important Note: There are exceptions to these general rules, especially with metalloids (elements with properties of both metals and non-metals).
