1) What is chemical analysis? a) The process of purifying chemicals b) The process of identifying chemical reactions c) The process of establishing what chemicals are present in a substance d) The process of measuring the concentration of chemicals 2) In everyday language what is a "pure" substance? a) A substance that has had nothing added to it and is in its "natural" state b) A substance that is transparent and odorless c) A substance that is commonly found in nature d) A substance that is safe to consume 3) In chemistry what is a "pure" substance? a) A substance made of a single element or compound b) A substance that is highly reactive c) A substance that is chemically unstable d) A substance that is not contaminated by impurities 4) How can pure substances be distinguished from impure ones? a) By their color and odor b) By their density and volume c) By their melting and boiling points d) By their physical appearance 5) Describe the melting and boiling points of pure substances a) One very specific temperature b) They change state at a range of temperatures c) They remain constant regardless of impurities d) They vary depending on the method of heating 6) Describe the melting and boiling points of impure substances a) They change state at a range of temperatures b) One very specific temperature c) They remain constant regardless of impurities d) They vary depending on the method of heating 7) What is a formulation? a) A simple mixture of substances b) A substance made of a single element c) A complex mixture designed as a useful product d) A substance used for scientific experiments 8) Give three examples of formulations a) Fuels, cleaning agents, and paints b) Alloys, fertilizers, and foods c) Medicines, paints, and alloys d) Cleaning agents, foods, and medicines

HALF WAY Chemical Analysis Combined (purity and formulations)

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