Which statememt best explains why the atomic theory developed efficiently? -Scientists ignored all previous knowledge about atoms.
-Scientists had used creativity and the scientific method in their investigations.
-Scientists had used philosphical viewpoint as a method of investigation.
-Scientists rarely repeated experiments to make sure the results were correct.

"the periodic table is arranged in order of atomic number."

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

how important do you think an instrument is to the musician who plays it?