Ineed info regarding these guys and what they did to with the discovery of atoms. only answer if you i am doing an essay and need quite a bit of info.
here are the guys i need to know about (you can choose one or two to focus on):
democritus (400bc), john dalton (early 1800s), j. j. thomson (1898), ernest rutherford (1909), niels bohr (1913), erwin shrodinger (1930), and james chadwick (1931).
here are the main things i need to know:
were there experiences in his life that led to his interest in science and the study of the atom?
his work on the atom and its contribution to the modern atomic model.
which contributions are present in the modern atomic model and which were eventually disproven and thus are not part of the modern model.

Asap , 8th grade science 50 points 1) a 2kg bowling ball sits on top of a building that is 40 m tall. what type of energy does it have? potential energy energy of acceleration kinetic energy chemical energy 2) a 2 kg bowling ball sits on top of a building that is 40 meters tall. how much potential energy does it have? 784 j 80 j 784 n 78.4 j 3) a 4 kg bowling ball rolls at a speed of 5 m/s on the roof of a building that is 30 meters tall. what type of energy does the bowling ball have? both potential and kinetic energy kinetic energy potential energy speed 4) a 4 kg bowling ball rolls at a speed of 5 m/s on the roof of a building that is 30 meters tall. what is its kinetic energy? 50 j 10 j 120 j 1,176 j 5) an 8 kg bowling ball rolls at a speed of 10 m/s on the ground. what type of energy does the bowling ball have? kinetic acceleration potential speed 6) an 8 kg bowling ball rolls at a speed of 10 m/s on the ground. what is its kinetic energy? 40 j 80 j 160 j 400 j 7) a 20 kg child is tossed in the air by her parent. what is her kinetic energy when she is 2 meters off the ground traveling at 5 m/s? 200 j 40 j 100 j 250 j 8) a 1,000 kg car has 50,000 j of kinetic energy. what is its speed? 100 m/s 150 m/s 50 m/s 10 m/s 9) a 200 kg boulder has 39,200 j of gravitational potential energy. what height is it at? 50 m 20 m 150 m 200 m 10) a 1 kg model airplane has 12.5 j of kinetic energy and 98 j of gravitational potential energy. what is its speed? 5 m/s 10 m/s 15 m/s 20 m/s

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

Draw the structure for 5-isopropyl-2-methyl-3-nonene