Skip to main content

Online notes for 9th class science - Is Matter Around Us Pure

Online notes for 9th class science - Is Matter Around Us Pure

In ths article, we have discussed the 'Non Metals'.
Non Metals : A non-metal is an element that is neither malleable /ductile and they are not good conductors of electricity. Eg: – Krypton, xenon, diamond, graphite etc. They are the allotropic forms of carbon. All the nonmetals are solids or gases, except bromine which is a liquid non-metal at room temperature.
  • Non Metals are not lustrous- Nonmetals do not have a shiny They have a dull appearance. Iodine is a nonmetal having a lustrous appearance. It has a shiny surface as metals have.
  • Non –Metals are generally soft– Most of the nonmetals are soft they can easily be cut with a knife. Carbon is the only nonmetal which is hard. Diamond is the exception which is extremely hard natural substance.
  • Non Metals are not strong- Nonmetals cannot hold large weights. They have very low tensile strength.
  • Non metals are not malleable, they are brittle- Non metals cannot be beaten into thin sheets with a hammer. They break into small pieces when hammered. Sulphur and phosphorus are brittle. They break into pieces when the hammer is a strike on them.
  • Non metals are not ductile- It means that nonmetals cannot be drawn into wires. They are easily snapped on stretching. On stretching, the nonmetal breaks into pieces.
  • Nonmetals are bad conductors of heat and electricity- It means the nonmetals do not allow heat and electricity to pass through them. Diamond and graphite are the forms of nonmetal which are good conductors of electricity. This is a reason why graphite is used for making electrodes.

We are a helping hand for students in all requirements. Our team is working regularly to keep the NCERT solutions of Class 9 and classes are available to visit our website takshilalearning.

Call us : 8800999280/8800999284

Labels:

Comments

Post a Comment

Thank you we will contact ASAP.

Popular posts from this blog

Why is Hindi Day celebrated on 14 September?

Why is Hindi Day celebrated on 14 September? After independence, the Government of India set a goal to give an ideal form to the mother tongue of the country and set a target for grammar and orthography using the Devanagari script to bring standardization in writing. Subsequently, on September 14, 1949, the Constituent Assembly decided by a vote that Hindi would be the official language of India. To propagate the importance of this decision and to spread Hindi in every region, India is celebrating Hindi Day every year from 1953 to 14 September, at the request of Rashtrabhasha Prachar Samiti, Wardha. Apart from this, 14 September is also the birthday of Rajendra Singh, who worked tirelessly to make Hindi the official language of India. Hindi Day is observed every year on 14 September to mark the importance of the Hindi language in the country. The Hindi language is one of the oldest languages, which derives most of its academic vocabulary from the Sanskrit language written in the Deva
Post a Comment
Read more

Magnetic and non-magnetic material Class 6 Science

Magnetic and non-magnetic material  Class 6 Science A magnet is a substance that is drawn to certain magnetic materials like iron, cobalt, and nickel. Magnets have the ability to draw iron to them. Natural magnets are rocks that naturally draw iron. Non-magnetic materials include things like wood, rubber, coins, feathers, leather, etc. that are not drawn to iron. Magnet characteristics It pulls magnetic materials, such as iron. The magnet's two ends are referred to as its poles. The magnet's diametrically opposed poles are drawn together. Heating, hammering, or dropping causes it to lose its characteristics. On the basis of properties types of Magnets Temporary magnets are those magnets that are magnetic for only a little duration. Typically, iron, cobalt, or nickel are used to make them. When they are close to the powerful magnet, they act like a magnet. When they are yanked away from the powerful magnet, they stop being magnetic. Permanent magnets are magnets that have magne
Post a Comment
Read more