Which physical properties can be used to differentiate between metals and non metals?
Some physical properties that can be used to differentiate between metals and non-metals include:
1. Appearance: Metals often have a shiny or lustrous appearance, while non-metals may be dull.
2. Conductivity: Metals are generally good conductors of heat and electricity, while non-metals are poor conductors.
3. Malleability and ductility: Metals are typically malleable (can be flattened into thin sheets) and ductile (can be drawn into thin wires), while non-metals are usually brittle and not easily shaped.
4. Density: Metals generally have higher densities compared to non-metals.
5. Melting and boiling points: Metals often have high melting and boiling points, while non-metals have lower melting and boiling points.
6. Reactivity: Metals tend to react with acids and produce hydrogen gas, while non-metals do not react with acids.
7. Electronegativity: Metals tend to have low electronegativity, while non-metals have higher electronegativity.
It is important to note that these properties are generalizations and may not hold true for all metals and non-metals. Additionally, there are some elements that exhibit properties of both metals and non-metals (known as metalloids or semi-metals).