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100

Geometry and bond angle of O atom in CH3OH

Bent; less than 109.5 degrees.

100

This physicist from New Zealand determine that atoms are mostly empty space with a small dense nucleus.

Ernest Rutherford
100

What is the most expensive metal on the periodic table?

Rhodium

100

This scientist was the first to recognize that the volume of a gas is inversely proportional to the pressure of a gas. 

Robert Boyle

100

Who is credited with creating the modern periodic table?

Dmitri Mendeleev is credited with creating the modern periodic table by organizing the elements based on increasing atomic weight with periodic chemical properties. 

200

What experimental technique is used to determine electron configuration?

PES

200

This physicist won the Nobel Prize in Physics in 1922 "for his services in the investigation of the structure of atoms and of the radiation emanating from them." 

Niels Bohr

200

What is the only periodic table group that contains elements in three of the main states of matter at standard temperature and pressure?

Halogens

200

This scientist proposed that the volume of a gas is directly proportional to the temperature of a gas.

Jacques Charles

200

Shiny like silver, denser than lead, pricier than gold, could stop a bullet. What am I?

Osmium

300

Write the equation (including states) for the standard enthalpy of formation of potassium chloride.

K(s) + 1/2Cl2(g) --> KCl(s)

300

Who was the first person to win a Nobel Prize twice, and the only person to win a Nobel Prize in two scientific fields, chemistry and physics?

Marie Curie won the 1903 Nobel Prize in Physics for the discovery of radioactivity and the 1911 Nobel Prize in Chemistry for the "discovery of the elements radium and polonium, [the] isolation of radium and the study of the nature and compounds of this remarkable element."

Additionally, she was the first woman to win a Nobel Prize. 

300

What is the most abundant element in the human body (by weight)?

oxygen

300

This element was commonly used as a prank among the nerdy chemists of the Victorian era. These chemists made spoons out of this element, which would then melt when their colleagues used the spoons to stir their tea.

gallium

300

Which isotope of uranium is used in nuclear chain reactions (fission)?

Uranium-235

400

Ethanol is miscible in water. What is a good method to separate the two substances?

Distillation

400

This ancient Greek philosopher was the first person to propose that matter is made of indivisible spheres.

Democritus

400

Which element is named after the most populous state in the USA?

Californium

400

This element was accidentally discovered by isolating it from over 1 ton of urine. Its flammable properties make it useful in matches.

phosphorus


400
This element is added to steel to enhance strength and toughness. To get more of this metal during World War I, German companies instituted a stealth takeover of an American mine and had this metal covertly shipped to Germany to build "Big Berthas" which were used to shell Paris from a distance of 75 miles.

Molybdenum

500

The Ksp of CaF2 is 4.3 x 10-11 in pure water. In acidic solution, the solubility of CaF2 is expected to (increase, decrease, remain the same) and why?

increase because the F- ion is basic.

500

This chemistry developed valence bond theory. and the idea of electron pairs to explain the shapes of molecules and chemical bonding. He never won a Nobel Prize, for which he was bitter. He was found dead in his Berkeley laboratory in 1946, where he had been working with hydrogen cyanide.

Gilbert Lewis

500

Which element is named after the most populous country in the EU?

Germanium

500

This scientist discovered cesium and rubidium. He also improved upon a commonly-used laboratory device, which was subsequently named after him.

Robert Bunsen

500

I am a planet, a God, and you use to me to measure temperature. What am I?

mercury