1) True or False: Table salt (NaCl) is a compound. a) True b) False 2) True or False: Nitrogen gas (N2) is compound.   a) True b) False 3) What element must a molecule have to be considered organic? a) Phosphorous b) carbon c) Nitrogen d) Helium 4) Which molecule does this ball and stick represent? a) Hydrogen Peroxide (H2O2) b) Sodium Chloride (NaCl) c) Water (H20) 5) How many atoms in total are in a phosphorus trichloride (PCl3) molecule? a) 1 b) 3 c) 4 6) Is phosphorus trichloride (PCl3) a compound, molecule, both, or neither? a) compound b) molecule c) both d) neither 7) Is this an element, compound, or mixture? a) Element b) Compound c) Mixture

Atoms, Elements, Molecules, Compounds Review

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