Copper will most likely react with which of the following elements? silver (Ag)
actinium (Ac)
chlorine (Cl)
yttrium (Y)

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

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?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: