The periodic law states that elements that have similar properties
a. to the left of each other
b. to the right of each other
c. at every 10th element
d. at regular intervals

Which car has the most kinetic energy? a. a car of mass 1000 kg with a speed of 3 m/s b. a car of mass 2000 kg with speed 7 m/s c. a car of mass 1000 kg with speed 7 m/s d. a car of mass 2000 kg with speed 3 m/s

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

This is one type of line graph in which the independent variable is time plotted on the x axis and the dependent variable, also numerical, is plotted on the y axis.