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100

another name for the law of definite proportions

what is "Proust's law" ?

100

Henry Cavendish referred to hydrogen by this name

what is "phlogiston" ?

100

what Bohr's model of an atom can best be compared to

what is a "solar system" ?

100

the main difference between diffusion and effusion

what is the "size of the opening of the container" ?

100

the most common way of increasing reaction rates

what is "increasing temperatures" ?

200

the most recent definition of a mole is based on an isotope of this element

what is carbon ?

200

the metal that is plated onto surgical instruments and sterling silver

what is platinum ?

200

the process of measuring changes in enthalpy

what is calorimetry ?

200

the term that describes water's ability to be an acid or base depending on the situation

what is "amphoteric" ?

200

The result of a change in a molecule's momentum

what is "force on the container wall" ?

300

a substance that behaves as both a liquid and a gas

what is supercritical ?

300

the term for the idea that molecules are always shifting phases

what is "dynamic transfer" ?
300

the type of attraction that creates the physical properties, such as the boiling point, of a substance 

what are intermolecular forces ?

300

the reason why atomic radius increases down a group

what is "increasing distance" ?

300

batteries are powered by these kinds of reactions

what are "oxidation-reduction reactions" ?

400

the name of a solution in which the solvent is a nonpolar substance

what is an organic solution ?

400

the change the occurs during alpha decay

what is "a helium nucleus is lost" ?

400

the observation that matter has both mass and wave properties provides the basis for this model

what is the quantum mechanical model ?

400

neutral salts are formed from reactions between these two kinds of solutions

what is "a strong acid and a strong base" ?

400

the type of order that liquids have

what is "long-range order" ?

500

chemists developed this concept when the interactions of some atomic orbitals did not predict the correct molecular shape

what is hybridization ?

500

the method that Joseph Priestley used that led to his discovery of oxygen

what is "heating a sample of mercuric oxide" ?

500

the scientist that first determined Avogadro's number

who is Jean Baptiste Perrin ?

500

 the order of the states of matter (solid, liquid, gas, solution) from lowest to highest entropy

what is "solid, liquid, solution, gas" ?

500

these two scientists established their model of DNA based on X-ray studies

who are James Watson and Francis Crick ?

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