Tag: physical properties of metals and non-metals
Questions Related to physical properties of metals and non-metals
Metals have:
Sodium and potassium are soft even after being metals because of:
A metal which is lighter than water is:
Metals generally extracted by electrolysis of their fused salts are highly:
You may be "shocked" to discover that metals are good conductors of electricity. Which of the following statements best explains why metals behave in this way?
You have three solids. One is a metal; one is an ionic compound; one is a molecular/covalent compound. You test all three solid samples to identify their bonding.
Sample | Appearance | Melting Point $(^{\circ}C)$ | Conductivity |
---|---|---|---|
A | Shiny | $962$ | conductive |
B | Crystalline | $801$ | conductive in aqueous solution |
C | Powdery | $186$ | not conductive |
Based on this data, identify the type bonds present in each sample.
Molten silver absorbs _________ which is given off on cooling causing violent spurting. This is called splitting of silver and can be prevented by covering the molten metal with a layer of charcoal.
The percent of silver in silver - copper alloy used for jewellery purposes has _______ % silver.
Which of the following is/are true regarding the physical properties of silver?
An element is sonorous and highly ductile. Under which category would you classify this element? What other characteristics do you expect the element to possess?