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Match each diagram below with a classification. (Choices can be used more than once) Match each diagram below with a classification. (Cholces can be used more than once) Classify the following changes as physical or chemical : a) baking soda dissolves in vinegar, producing bubbles b) moth balls gradually disappear at room temperature: c) when a can of soda is opened bubbles form: d) steam condenses to a liquid on a cool surface Classify the following properties of sodium metal as physical or chemical: a) silver metallic color b) turns grey in air: c) reacts explosively with chlorine: d) melts at 98C