A student wants to determine the speed of which an ant moves. which two pieces of equipment would be most useful for answering this question?  A. stopwatch metric and metric ruler B. Metric ruler petro dish C. petri dish and compound microcospe D. Compound microscope and wall clock

A. a stopwatch and a metric ruler

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called