True: A molecule can have different properties to the atoms that make it, NH3 is a stinky gas., The number of bonds an atom can make is called its valency., Neon has a valency of 0., Fluorine has a valency of 1., False: H2 and O2 are gases. Therefore H2O is a gas., All substances have the same properties., Oxygen has a valency of 4., Carbon has a valency of 1,

11th Video C

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