Which substance cannot be changed or broken down into anything smaller What is used in analytical laboratories? Why does an atom of carbon 12 weigh 12 u while a mole weighs 12 g?

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To start using this template, click “File” -- “Make a Copy” MM/DD/YYYY Chemistry: Exam 1 Chapters 1-4 • chemistry: the study of the composition, properties, and transformation of matter • Scientific Method: • Observation: the recording of data out of curiosity or necessity • Hypothesis: a temporary, testable guess about observations • Experiment: test of the hypothesis in a controlled environment w/ 1 changed variable • Theory: united principle that generally explains observations and agrees with explanations • Peptides: molecules made of amino acids joined together to create a chain • Molecular models: used to represent