1. <span>Substances in a </span>mixture<span> can be separated using different </span>methods, for example <span>distillation (separation of two liquids). 2. </span>Mass<span> is the amount of matter an object contains. </span>Volume is t<span>he amount of space occupied by a three-dimensional object. 3. d(wallet) = 15g</span>÷5cm³ = 3g/cm³. 4. Weight of an astronaut also increases. W=m·g.
They are more likely to be covalent as covalent compounds usually tend to be radical on the color spectrum with deep purples and blacks and even earwax colored.