Which statement is correct about the rate of most chemical reactions? it increases when the concentration of reactants decreases. it does not depend on the concentration of reactants. it increases when the temperature increases. it does not depend on the temperature.

It increases when the temperature increases.

Explanation:

According to Arrhenius relation: k = Ae(-Ea/RT).The rate constant of the reaction and also the rate of the reaction increases exponentially with increasing the temperature of the reaction.As the temperature increases, the no. of molecules that can posses the critical energy (activation energy) to initiate the chemical reaction and pass the energy barrier increases.

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

Ithink that the use of creativity in the sciences entails that one produce something out of nothing or from another thing. with this, i think that the he wrote down his results as four parts of the atomic theory is the manifestation of the  creativity of john dalton.