1. Explain the differences between the following terms: (a) solids and liquids (b) heterogeneous mixture and homogeneous mixture (c) atom and molecule (d) extensive properties and intensive properties (e) accuracy and precision. (f) physical change and a chemical change 2. Classify each of the following as an element, a compound, or a mixture: (a) iron (b) oxygen (c) mercury oxide (d) pancake syrup (e) carbon dioxide (f) H2 (hydrogen) gas (g) baking soda (h) baking powd 1. Explain the differences between the following terms: (a) solids and liquids (b) heterogeneous mixture and homogeneous mixture (c) atom and molecule (d) extensive properties and intensive properties (e) accuracy and precision. (f) physical change and a chemical change 2. Classify each of the following as an element, a compound, or a mixture: (a) iron (b) oxygen (c) mercury oxide (d) pancake syrup (e) carbon dioxide (f) H2 (hydrogen) gas (g) baking soda (h) baking powd