Argon is a naturally occurring element.
It is not chemically reactive and is heavier than air - so your argon balloons will sit on the floor not the ceiling!
Argon is a gas at STP.
natural
According to wikipedia, argon has 24 known isotopes. 40Ar is most abundant at about 99.6% of natural argon.
Acrylic is a synthetic fiber made from polymers derived from petroleum or natural gas. It is not a natural fiber like cotton or wool.
It is a synthetic addition polymer.
Argon is a gas. It is not synthetic.
Neither. Argon is naturally occurring noble gas
Argon is a natural element found in the air.
natural
It is synthetic, but what we use to make concrete is natural AND synthetic.
Argon is a gas at STP.
is bromine natural or synthetic?
Polyester is synthetic.
it is synthetic
It is mainly the atmosphere. Compounds of argon are not natural on earth.
no. argon is not found in the human body
Yttrium is a natural element found in the Earth's crust. It is not a synthetic element.