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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

Who discovered the element oxygen?

Priestley

Who were the first people to introduce an organized approach to chemistry?

Greeks

True or False: It is possible to establish absolute truth using science.

False

True or False: All of science is about making models.

True.

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

True or False: Chemistry is a relatively ancient science.

True

True or False: The Greeks desired knowledge rather than practical skill.

True

True or False: The scientific method, when used properly, can lead a person to absolute truth.

False

True or False: Scientific method is a set of steps that must be followed strictly in order to reach a valid conclusion.

False

What is inductive reasoning?

General statements used to find a specific conclusion. (General -> Specific)


What is deductive reasoning?

Known data used to find an unknown general conclusion. (Specific -> General)

Inductive or Deductive: All matter is made of atoms. This paper has many atoms, therefore this paper is matter.

Deductive.

Inductive or Deductive: All oranges are fruits. All fruits grow on trees. Therefore, all oranges grow on trees.

Deductive.

Inductive or Deductive: Dr. Smith hes performed many successful surgeries. When Dr. Smith operates on me it will be successful.

Inductive.

What is pure chemistry?

Probes nature to learn new things. (ex. astronomer looking for new asteroids.)

What is applied chemistry?

explored natural products for specific applications (ex. chemist searching for a more efficient meat-packaging plastic.)

What are the six branches of chemistry?

Nuclear, analytical, organic, inorganic, physical and biochemistry.

List the 5 steps in the scientific method.

Find a problem, hypothesis, conduct experiment, record data and conclusion.

What is ductility?

Ability of a material to be drawn into wires

How many atoms of oxygen are there in 5 molecules of penicillin G (C17H20O4S)?

20

Celsius to Fahrenheit formula

(1.8 x Celsius) + 32

Fahrenheit to Celsius formula

(Fahrenheit - 32)/1.8

Celsius to Kelvin formula

Celsius + 273.15

Kelvin to Celsius

Kelvin - 273.15

The amount of energy required to raise the temperature of 1 gram of water 1 degree Celsius sis defined as a

calorie

True or False: Temperature measures the total kinetic energy in a sample.

True

What is the 1st Law of Thermodynamics?

matter cannot be created nor destroyed

What is the 2nd Law of Thermodynamics?

waste

What is the 3rd Law of Thermodynamics?

absolute zero can never be reached

Physical or Chemical: Leaves changing color.

Chemical

Physical or Chemical: Melting wax

Physical

Physical or Chemical: Burning paper

Chemical

What condition distinguishes plasmas from more "normal" states of matter?

extremely hot; makes up stars

List the 7 naturally occurring diatomic atoms

Iodine, Bromine, Nitrogen, Chlorine, Fluorine, Oxygen, Hydrogen

What is the region around the nucleus of the atom where electrons are found?

orbitals

What scientist made the planetary model of the atom?

Bohr

what describes how electrons fill a sublevel

Aufbau principle

what describes how electrons fill orbitals

Hund's rule

what did JJ Thompson discover?

electrons

True or False: The general region of space where an electron is most probably found is known as an orbital.

True

who isolated the neutron?

Chadwick

states that no two electrons can have the same set of four quantum numbers

Pauli exculison

What determines the chemical properties of an element?

# of valence electrons

Chemical bonds formed when electrons move freely from one atom to another are

metallic

True or False: A bond between two atoms can be 100% covalent, but it can never be 100% ionic.

True

The luster or shine seen on most metals is thought to be caused by the movement of

electrons

Which molecular geometric shape is always polar?

Bent

True or False: Metallic bonding is characterized by a lose transfer of electrons between two atoms.

True

when is the geometric shape linear?

2-1, 2-2, 3-2, 4-1

when is the geometric shape bent?

3-2, 4-2

when is the geometric shape trigonal planar?

3-3

when is the geometric shape pyramidal?

4-3

when is the geometric shape tetrahedral?

4-4