Metals, Non-Metals & Metalloids Video Lecture | Chemistry for JEE Main & Advanced

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0:0:3: have you ever stopped to think about how
0:0:5: amazing your smartphone is it has more
0:0:8: computing power than the system NASA
0:0:10: used to put humans on the moon 50 years
0:0:14: ago no one could have imagined that you
0:0:16: would be able to browse the web listen
0:0:19: to your favorite bands and connect with
0:0:21: your friends using a single object that
0:0:23: fits in the palm of your hand none of
0:0:26: this would be possible without chemistry
0:0:28: about 91 of the 118 elements or metals
0:0:33: around 20 are used to build your phone
0:0:36: most metals share distinct physical
0:0:38: properties that make them ideal for
0:0:40: manufacturing smartphones metals have
0:0:44: luster which means they reflect light
0:0:46: smartphone designers use this property
0:0:49: to market smartphones as a sleek and
0:0:51: modern piece of technology metals form
0:0:54: strong crystalline structures which
0:0:56: contributes to durability
0:0:58: if you accidentally dropped your phone
0:1:0: the metal shell wouldn't break but you
0:1:3: may have to live with a cracked screen
0:1:5: unlike the glass metals are malleable
0:1:8: which means they can be hammered or
0:1:10: pressed permanently out of shape without
0:1:12: breaking or cracking your smartphone can
0:1:14: distinguish between a tap scroll or zoom
0:1:18: because of metals ability to conduct
0:1:20: electricity so well modern smartphones
0:1:23: utilize capacitive touchscreens the
0:1:26: screen contains a sheet of glass with
0:1:28: thin lines of highly conductive metal
0:1:30: compound arranged in a grid pattern at
0:1:33: each intersection an electrostatic field
0:1:36: is generated and registered as neutral
0:1:38: when you touch the screen a tiny bit of
0:1:41: electrical charge enters your finger
0:1:43: which disrupts the field and produces a
0:1:46: signal metals are ductile meaning they
0:1:49: can be pulled into wire
0:1:50: whenever you interact with your phone a
0:1:52: signals transmitted through a complex
0:1:54: highway of wires to your processor your
0:1:57: processor is like the brain of your
0:1:59: smartphone similar to the human brain it
0:2:1: receives signals from different parts of
0:2:3: your phone and translates them into
0:2:6: instructions for action like opening
0:2:8: YouTube so you can watch the latest
0:2:10: video of baby goats in pajamas like
0:2:14: metals metalloids have lustre but unlike
0:2:17: metals they're not malleable or ductile
0:2:19: so they break apart easily metal aids
0:2:22: are a crucial component of your
0:2:23: processor because they're semiconductors
0:2:25: meaning they conduct electricity but not
0:2:28: quite as well as metals semiconductors
0:2:30: allow electricity to pass through your
0:2:33: phone's transistors in a controlled
0:2:35: manner if you used metal too many of
0:2:38: your transistors would activate causing
0:2:40: a processor to malfunction the
0:2:43: properties of nonmetals are the opposite
0:2:45: of metals they're brittle solids or
0:2:48: gaseous at room temperature and they're
0:2:50: not malleable conductive or ductile
0:2:52: their specific properties are so diverse
0:2:55: they don't have widespread applications
0:2:58: like metals one application is
0:3:0: responsible for powering up your phone
0:3:2: in a battery there's a positive
0:3:5: electrode usually made of a lithium
0:3:7: compound and a negative electrode
0:3:9: usually made of carbon a nonmetal when
0:3:13: the battery is charging the positive
0:3:15: electrode gives up some of its lithium
0:3:16: ions which move through to the negative
0:3:19: electrode when the battery is being used
0:3:21: lithium ions travel back to the positive
0:3:24: electrode producing the energy needed to
0:3:26: do things like map directions to a new
0:3:28: restaurant in town by utilizing the
0:3:31: general properties of metals metalloids
0:3:33: and nonmetals we can continue to create
0:3:36: incredible advancements in technology
0:3:39: next time you text your friend about
0:3:41: meeting up for pizza take a moment to
0:3:43: appreciate the complex chemistry
0:3:45: responsible for making it happen we
0:3:51: wouldn't be able to create these videos
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