A] Sarah wanted to know if water boils faster when salt is added to it. She put two liters of water in two identical pots, then added three tablespoons of salt to one pot. She put both pots on a stove, each on high
heat. She then recorded how long it took for each pot of water to boil. What is the independent variable in this
experiment?

A) the amount of water in each pot
B) the type of pots used
C) the amount of salt in each pot

Which of the following ideas did greek philosopher democritus contribute to the atomic theory? a. each object is made up of one atom, which varies in size from very small to very large. b. matter is composed of only one kind of particle, which can be easily destroyed. c. every element has a specific type of atom, which remains the same size in all forms of matter. d. all matter is composed of small particles, which combine to make larger objects.