Lustrous nature of metals — task. Science CBSE, Class 7 New.

PDF chapter test TRY NOW

Give short answer to the following question:

1. What makes metals to shine?

Metals are hard, hence they look shiny
Metals are pure, so they look bright
Metals are clean, so they reflect light
Metals have free electrons that reflect light, and giving them a metallic shine

2. A student says, "All non-metals are dull." Which observation proves this statement is incorrect?

Mercury is liquid.
Sodium is soft.
Diamond is shiny.
Iron is shiny.

Login or Fast registration

Previous exercise

Exit to the topic

Did you find an error?

Register for free to see more content

Register for free to see more content