Theory:

Non-metals
Uses
 
Diamond
  • It is another form of carbon used for making jewels, cutting and grinding equipment. Graphite is used for making pencil lead.
BeFunky-collage (7).jpg
Sulphur
  • It is used for the manufacturing of gun powder and the vulcanization of rubber.
shutterstock_459528727.jpg
Phosphorous
  • It is used for making matches, rat poison, etc.
BeFunky-collage (8).jpg
Nitrogen
  • It is used in the manufacturing of ammonia.
shutterstock_723175018.jpg
Chlorine
  • It is used in sterilizing water and used as a bleaching agent.
shutterstock_1906617064.jpg
Hydrogen
  • It is used as rocket fuel.
  • Hydrogen flame is used in cutting and welding.
  • Used as a reducing agent.
45451218535_e25059c869_b.jpg
 
 
Metalloids:
 
As we know, metalloids exhibit the properties of metals as well as non-metals.
Example:
Arsenic, antimony, silicon, boron, etc.
Physical properties:
  • Metalloids are solid at room temperature.
  • They can form alloys with other metals.
  • Some metalloids (silicon and germanium) can behave as electrical conductors under specific conditions. Hence, they are called Semiconductors.
  • Silicon appears lustrous; however, it is not malleable nor ductile (it is brittle, a characteristic of some non-metals).
  • It is a bad conductor of heat and electricity than metals.
  • The physical properties of metalloids tend to be metallic, but their chemical properties tend to be non-metallic.
Uses:
  • Silicon is used in electronic devices such as cell phones, calculators, etc.
  • Boron is used in fireworks for providing green colour and as a fuel for ignition in the rocket.
Reference:
file:///C:/Users/user/Desktop/Books/8th_Science/TN/8th_Std_Term_I_Science_EM.pdf
https://live.staticflickr.com/2388/2376598010_9543d6a12b_b.jpg
https://live.staticflickr.com/3795/10545288056_a228e75d69_b.jpg
https://live.staticflickr.com/17/20509305_a2723b24db_b.jpg
https://live.staticflickr.com/4918/45451218535_e25059c869_b.jpg
https://cdn.pixabay.com/photo/2015/09/23/10/54/rat-poison-953433_1280.jpg
https://www.shutterstock.com/da/image-photo/urea-fertilizers-researcher-hand-research-on-723175018
https://www.shutterstock.com/da/image-photo/sauce-spilled-bleaching-agent-on-white-1906617064
https://www.shutterstock.com/da/image-photo/rifle-bullet-gun-powder-isolated-459528727