Suppose that a substance in a beaker is heated over a burner in a science lab. Which observation would most likely indicate that a chemical change has occurred in the substance? If the substance is a liquid or solid, an increase in temperature would indicate a chemical change. If the substance is a liquid, a change of some of the liquid to gaseous form would indicate a chemical change. If the substance is a solid, a change of some of the solid to liquid form would indicate a chemical change. If the substance is a liquid or solid, production of an odor would indicate a chemical change.

An ideal gas is held in a container at constant volume. initially, its temperature is 5 degrees c and its pressure is 1.2 atm. what is its pressure when its temperature is 43 degrees c? answer in units of atm

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse

Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer