What is the study or matter and it's transformations?

Strom surges are generated by intense? What house object weighs 1 centigram? What is the nerve in the medial epicondyle that makes your hand tingle? Is the mass of a object equal to its weight? What does heat measure? What does it mean when there is no power light and you cannot hear the cooling fan running in a computer? What unit of speed is used to express the speed of tortoise? What is the Velocity of a toothpick? What is 34.6 Celsius changed to Fahrenheit? How do you find force if you have the weight? What can describe both the speed and direction of an object's motion? Is there a such thing as negative acceleration? Why It is easy to stop a rubber ball than a wooden ball of same size moving with the same speed. Explain? Can photons be accelerated? Why does latent heat effect the shape of heating and cooling curves? How do you remove fingerprint on paper? What type of surfaces might cause a toy car to roll faster or slower? What causes thermal energy always formed in an energy conversion? What scientific instruments are used to measure speed? How many psi in one atmosphere?

What is the study or matter and it's transformations?