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1. How is a compound different from an element? Give an example of each. 2. What is the difference between a mixture and a pure substance? There are two types of mixtures. Those mixtures are homogeneous and heterogeneous. In the mixtures the ingredients are visible. Whereas, in a pure substance, there is only one kind of substance and it is not visible, but thoroughly mixed. 3. How is a suspension different from a solution? 4, Classify each of the following as either a pure substance or a mixture. (a) Pop is composed of water, sugar, and carbon dioxide. Mixture (b) Carbon dioxide is composed of carbon and oxygen chemically combined. Pure substance (c) Sand is composed of white grains and black grains. Mixture (d) The graphite at the centre of a pencil is composed of carbon. Pure substance Question set #2 1. What are two features that all forms of matter have? The two features that all forms of matter have are volume and mass. 2 Use the particle theory of matter to explain what makes a liquid different from a solid of the same substance. A liquid is different from a solid of the same substance as the particles have a larger space to move around, but solid particles are closer together and have less room to move.