Molecule I believe
Water is a pure compound -- all of it is one kind of molecule: H2O.
It is a mixture of salt and water.
It is a mixture.
Tap water is a mixture. It is water with some impurities.
its a mixture, water as a pure form has no salt in it
Helium is an element.
Gold is an element.
Water is a pure compound -- all of it is one kind of molecule: H2O.
A solution is a mixture.
copper is definite element
River water is generally a heterogeneous mixture based on the different components it is carrying. Water by definition is not an element, rather a molecule comprised of them.
a water molecule is written as H2O two hydrogen atoms and one oxigen atom
Hydrogen* is neither a mixture nor a compound it is a basic element. Compounds are combinations of elements such as H20 (water molecule and 2 oxygen molecules) and mixtures are combinations of substances such as mixing oil and water.
This compound is a molecule, so NOT an element, nor mixture. Chem. formula: C6H12O6 (an example of carbohydrate)
Iodine, I2 is an diatomic element, with two atoms in the molecule.
None of those. It's a compound.Answer:CO2 is a molecule
O3 is a molecule / compound, not element