hey it's Kaeleigh this lesson is about the
common elements on the periodic table of
elements
make sure you've already watched the
periodic table of basics video before
watching this one alright let's get
started
from the periodic table basics video you
know all about the organization of the
periodic table of elements
but now let's dive into the actual
contents of the table the elements we're
going to learn about 20 different
elements I know that sounds like a lot
but you probably know more than you
think already let's go an order of
atomic number so we'll start with number
1 hydrogen we use the element symbol H
for hydrogen hydrogen is the lightest
element in the universe it is burning in
the Sun and the stars
number 2 is helium we use the symbol HE helium is also very light and light
hydrogen is burning in the Sun and the
stars but you might know helium even
more from balloons when balloons float
up in the air at a birthday party it's
because they are full of helium and
helium is so light it floats in air
number 3 is lithium the symbol Li you
might not think you know lithium but you
definitely do lithium is in batteries
and helps to power our electronics
number 4 is beryllium with the symbol Be you might not have seen beryllium in
person but I'm sure you know that fancy
green stone called an emerald an emerald
is made of beryllium next step is number
5 which we shortened to B but is called
boron boron is used in sports equipment
like tennis racquets number 6 is carbon
which we symbolize as C carbon is the
basic element of all life that means all
living things need it to survive number
7 is nitrogen with the symbol n nitrogen
is important for our bodies to be strong
that's because nitrogen is protein
next up perhaps the most famous element
atomic number eight gives us oxygen
which we write as O I'm sure you
already know but oxygen makes up the air
we breathe and humans and animals need
it to survive number nine is fluorine
with a symbol F but perhaps you know it
better as fluoride which is found in our
toothpaste to make sure that we have
strong teeth number ten is neon with the
element symbol Ne I'm sure you've seen
some neon signs before a lot of
businesses use neon signs to advertise
that they are open because neon is so
bright and glowing number eleven is
sodium which we use Ne as a symbol I
know it seems like a funny symbol but it
will get stuck in your head
sodium is salt and when it is bonded
with chlorine it makes the type of salt
you probably keep in your kitchen
number twelve is magnesium with a symbol
mg magnesium is used in plants and makes
up chlorophyll that's what makes plants
green the leafy green plants you eat
have lots of magnesium on two atomic
number thirteen we have aluminum and we
write it as Al aluminum is a light metal
and is used to case airplanes but you
might have used it to save your
leftovers number fourteen gives us
silicon which we symbolize as Si
silicon is used for all types of things
because it's very flexible and durable
silicon exists in rocks and soil but
maybe you've even used a silicon cup to
drink a hot beverage atomic number
fifteen is phosphorus which we
symbolized with a P phosphorus is what
our bones are made up of number sixteen
is sulfur which we write as S sulfur is
found in egg yolks and funny enough it
can smell like rotten eggs
next up atomic number 17 which I'm sure
you heard of before it's chlorine which
we use the elemental symbol Cl chlorine
is used in pools to keep the water clean
number 18 is argon with the atomic
symbol Ar argon is used in light bulbs
so you have some in your house right now
atomic number 19 is potassium which we
give a symbol K potassium is found in
fruits and vegetables and help your body
heal from bruises and sore muscles last
up we have atomic number 20 this element
is calcium which we shortened to Ca I
bet you know that calcium is in milk and
makes your bones strong but did you know
that calcium is also in seashells and
there you have it those are 20 of the
most common elements we use or see in
our everyday life keep studying and
practice what you've learned by playing
our online games and doing the online
quizzes have fun and remember to always
be clever
