Question

WHAT ARE METALS AND NON METALS? GIVE 3 EXAMPLES.

Answer 1

Answer:

metals are strong and rigid. most of them are solids at room temperature. eg: iron , copper, mercury etc.

substances that are mostly fluids ans soft are called non - metals. eg sodium, magnesium, carbon etc.

there are some exceptions also.

Explanation:

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Answer 2

$\huge\sf\underline{\pink{A}\orange{N}\purple{S}\blue{W}\red{E}\green{R}}$

FORCE-:

IT IS A PULL OR PUSH.

CONTACT FORCE-:

A contact force is any force that requires contact to occur. Contact forces are ubiquitous and are responsible for most visible interactions between macroscopic collections of matter.Example:- Pushing a car up a hill or kicking a ball across a room are some of the everyday examples where contact forces are at work.

NON- CONTACT FORCE-:

A non-contact force is a force which acts on an object without coming physically in contact with it. The most familiar non-contact force is gravity, which confers weight. In contrast a contact force is a force applied to a body by another body that is in contact with it.Examples of this force include: electricity, magnetism, radio waves, microwaves, infrared, visible light, X-rays and gamma rays.