Svante Arrhenius

The properties of solutions are best explained by assuming that electrolytes dissociate into ions.

The degree of dissociation of an electrolyte increases with dilution.

Acids are substances which give hydrogen ions in solution, and bases are substances which give hydroxyl ions.

The conductivity of electrolytes is due to the movement of ions.

The osmotic pressure of solutions is proportional to the number of particles present, whether they are molecules or ions.

The heat of neutralization is constant for strong acids and strong bases because the reaction is essentially the combination of hydrogen and hydroxyl ions to form water.

The rate of chemical reactions depends on the concentration of the reacting ions.

The activation energy of a reaction is the minimum energy required for the reactants to transform into products.

The temperature dependence of reaction rates can be described by an exponential function.

The concept of 'active molecules' is essential for understanding reaction kinetics.

The earth has passed through several ice ages, and these are likely due to variations in the amount of carbonic acid in the atmosphere.

The increase of carbonic acid in the atmosphere, due to the burning of coal, will lead to a more equable and better climate for mankind.

The oceans act as a great regulator of the carbonic acid content of the atmosphere.

The future of our climate depends on the rate at which we consume fossil fuels.

The idea that the earth's climate is stable and unchanging is a misconception.

The sun's radiation is the ultimate source of all energy on Earth.

The aurora borealis is caused by electric discharges in the upper atmosphere, due to particles emitted from the sun.

The tails of comets are formed by the repulsion of small particles by the pressure of sunlight.

The pressure of light is a real physical force that can influence the movement of celestial bodies.

The universe is a vast electrical machine.