Science
Who first proposed the concept of atomism?
Leucippus
Which famous experiment displayed the wave properties of the electron?
Davisson-Germer experiment.
How does a neutrino differ from an electron?
Neutrinos have no charge and very small mass.
Who gave hyrdrogen it's current name?
Antoine Lavoisier
Which principle did Antoine Lavoisier establish?
The law of conservation of mass
What term represents a positive ion?
Cations
How did Carl Wilhelm Scheele and Joseph Priestley experiment with oxygen?
By burning oxides
Polar bonds occur due to differences in what?
Electronegativity
Combustion reactions involves substances reacting with what?
Oxygen
How many oxygen atoms make up one ozone molecule?
3 oxygen atoms
Which of the following compounds exists in the form of a network?
Silica
What element contains NO neutrons?
What is carbon's atomic number?
6
How many naturally occurring isotopes does carbon have?
3
How do ionic and covalent bonds differ?
Ionic bonds occur between atoms within a molecule, whereas covalent bonds occur between discrete molecules.
What nationality was John Dalton?
English
Who proposed the FIRST theory of acid-base reactions?
Svante Arrhenius
What is a quantum of light energy called?
A photon.
DNA's backbone comprises a sugar and a ______.
Phosphate groups
Which insoluble compound forms stalactites and stalagmites?
Calcium carbonate
Which scientist proposed that the four elements were earth, air, water, and fire?
Aristotle
Which type of substance causes larger than expected changes in the point at which a substance’s phase shifts?
Salts
What causes electricity?
Moving electrons.
Which chemist formulated rules to explain colligative properties?
Francois Raoult
How many outer shell electrons does one chlorine atom have?
7