When is a scientific theory formed? A. When a scientific idea has been tested many times
B. When an experiment has been repeated many times
C. When a hypothesis is supported by the experiment
D. When an experimental result becomes a proven fact

9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point