A student places a strip of magnesium metal in a test tube containing hydrochloric acid. When the metal strip comes in contact with the acid, bubbles begin to form. The student holds a lit wooden splint over the mouth of the test tube. The flame ignites the gas exiting the test tube and produces a single high-pitched sound. What can the student determine from this burning splint test?

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Which is a character of nuclear fusion but not nuclear fission

56.16 gregor mendel was the first scientist to use statistics to analyze scientific data. before mendel's experiments, scientists believed that organisms acquired traits from their environment and passed them on to their offspring. after mendel's discoveries were accepted, scientists realized that traits passed to offspring were the result of genes being passed from parents to offspring. this is an example of pls