A student reads that the force of gravity between two objects depends on the size of each object and the distance between them. What can the student infer about the movement of planets in the solar systembased on the reading?

Compare and contrast physical changes with chemical changes.

Which of the following is most likely true about water in chemical solutions?

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.