Nobody answers anymore but it's worth a shot, i will give branliest tho. 1. when Sodium reacts violently with water is it a physical or chemical change?

2. Ethanol is clear, is that a physical or chemical change?

Which best explains why an iceberg floats?

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

Which words or phrases identify layers of groundwater? check all that apply. water table kettle lake saturation zone underground lake sinkhole will give brainiest, answer quickly.