Match the term with the answer, 1. atom 2. phase 3. element 4. particle a. the basic unit of an element b. a substance that cannot be broken down into a simpler substance c. a tiny piece of matter d. a unique form of matter in which it can exist

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

What type of matter is made of only one kind of atom

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