You are a police detective working on a very important crime and have collected some evidence. if the identities of various compounds in the evidence need to be determined or if you need to know the amounts of those compounds, to whom might you send the samples?

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

What is the relation between concentration of reactants and the rate of chemical reaction?

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions.what elemental classification does oxygen belongto? done