What does the pH of a solution depend on? O The concentration of hydrogen ions in the solution
The number of hydrogen atoms on each molecule
O The concentration of hydroxide ions in solution
O The amount of hydrogen gas dissolved in the solution

Select the atomic models that belong to the same element

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.