Yes. Helium is colorless.
yes. it is colourless
Helium is a colourless gas
Helium is a colorless, odorless gas at room temperature.
No. Helium is a odourless and colourless gas.
because we can't see it
Helium is a colourless gas, hence transparent. Please see the link.
helium is a colourless odourless gas
Helium is a colourless, odourless gas with an extremely low boiling point
Helium is a colourless, odourless gas. It belongs to group 18 and is chemically inert.
Helium is a colourless, tasteless and odorless, non toxic and inert gas - no metal
It is a colourless gas at STP
Helium is an element a pure substance it is a chemical. It has properties eg it is a gas, it is colourless, it is odourless