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54 Cards in this Set
- Front
- Back
What is the most important contribution made to modern chemistry by alchemists? |
Experimental approach |
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Who discovered the element oxygen? |
Priestley |
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Who were the first people to introduce an organized approach to chemistry? |
Greeks |
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True or False: It is possible to establish absolute truth using science. |
False |
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True or False: All of science is about making models. |
True. |
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True or False: It is difficult for a Christian to be a chemist and be distracted from his responsibility to share the gospel with unbelievers. |
False |
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True or False: Chemistry is a relatively ancient science. |
True |
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True or False: The Greeks desired knowledge rather than practical skill. |
True |
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True or False: The scientific method, when used properly, can lead a person to absolute truth. |
False |
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True or False: Scientific method is a set of steps that must be followed strictly in order to reach a valid conclusion. |
False |
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What is inductive reasoning? |
General statements used to find a specific conclusion. (General -> Specific)
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What is deductive reasoning? |
Known data used to find an unknown general conclusion. (Specific -> General) |
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Inductive or Deductive: All matter is made of atoms. This paper has many atoms, therefore this paper is matter. |
Deductive. |
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Inductive or Deductive: All oranges are fruits. All fruits grow on trees. Therefore, all oranges grow on trees. |
Deductive. |
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Inductive or Deductive: Dr. Smith hes performed many successful surgeries. When Dr. Smith operates on me it will be successful. |
Inductive. |
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What is pure chemistry? |
Probes nature to learn new things. (ex. astronomer looking for new asteroids.) |
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What is applied chemistry? |
explored natural products for specific applications (ex. chemist searching for a more efficient meat-packaging plastic.) |
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What are the six branches of chemistry? |
Nuclear, analytical, organic, inorganic, physical and biochemistry. |
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List the 5 steps in the scientific method. |
Find a problem, hypothesis, conduct experiment, record data and conclusion. |
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What is ductility? |
Ability of a material to be drawn into wires |
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How many atoms of oxygen are there in 5 molecules of penicillin G (C17H20O4S)? |
20 |
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Celsius to Fahrenheit formula |
(1.8 x Celsius) + 32 |
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Fahrenheit to Celsius formula |
(Fahrenheit - 32)/1.8 |
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Celsius to Kelvin formula |
Celsius + 273.15 |
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Kelvin to Celsius |
Kelvin - 273.15 |
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The amount of energy required to raise the temperature of 1 gram of water 1 degree Celsius sis defined as a |
calorie |
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True or False: Temperature measures the total kinetic energy in a sample. |
True |
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What is the 1st Law of Thermodynamics? |
matter cannot be created nor destroyed |
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What is the 2nd Law of Thermodynamics? |
waste |
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What is the 3rd Law of Thermodynamics? |
absolute zero can never be reached |
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Physical or Chemical: Leaves changing color. |
Chemical |
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Physical or Chemical: Melting wax |
Physical |
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Physical or Chemical: Burning paper |
Chemical |
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What condition distinguishes plasmas from more "normal" states of matter? |
extremely hot; makes up stars |
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List the 7 naturally occurring diatomic atoms |
Iodine, Bromine, Nitrogen, Chlorine, Fluorine, Oxygen, Hydrogen |
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What is the region around the nucleus of the atom where electrons are found? |
orbitals |
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What scientist made the planetary model of the atom? |
Bohr |
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what describes how electrons fill a sublevel |
Aufbau principle |
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what describes how electrons fill orbitals |
Hund's rule |
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what did JJ Thompson discover? |
electrons |
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True or False: The general region of space where an electron is most probably found is known as an orbital. |
True |
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who isolated the neutron? |
Chadwick |
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states that no two electrons can have the same set of four quantum numbers |
Pauli exculison |
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What determines the chemical properties of an element? |
# of valence electrons |
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Chemical bonds formed when electrons move freely from one atom to another are |
metallic |
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True or False: A bond between two atoms can be 100% covalent, but it can never be 100% ionic. |
True |
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The luster or shine seen on most metals is thought to be caused by the movement of |
electrons |
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Which molecular geometric shape is always polar? |
Bent |
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True or False: Metallic bonding is characterized by a lose transfer of electrons between two atoms. |
True |
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when is the geometric shape linear? |
2-1, 2-2, 3-2, 4-1 |
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when is the geometric shape bent? |
3-2, 4-2 |
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when is the geometric shape trigonal planar? |
3-3 |
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when is the geometric shape pyramidal? |
4-3 |
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when is the geometric shape tetrahedral? |
4-4 |