Would you classify the atoms in the table as pure substances?

Explain that newton first law,second law and third law of motion?

What is the percent by mass of oxygen in fe2o3

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of