Daisy was conducting an investigation using two liquids. Both liquids were clear and were at the same temperature, 25°C. When she combined the liquids in a large beaker, gas bubbles were produced and the liquid turned blue. The student took the temperature of the beaker, which now measured 27°C. All of the following show that a chemical reaction may have occurred EXCEPT

The Science section of the GED lasts 90 minutes and contains 50 questions. The science section tests your ability to work with science information from life science, physical science, and earth and space science.