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the science of the composition, structure, properties and reactions of carbon based matter, especially of atomic and molecular systems
an assertion subject to verification or proof as a premise from which a conclusion is formed
any mechanical aid used to assist in or enhance the processes of learning to teaching
summarizing statement of observed experimental facts that has been tested many times and is generally accepted as true
a variable star that suddenly increases in brightness to several times its normal magnitude and returns to its original appearance in a few weeks or months or years
an atom that gives off nuclear radiation and has the same number of protons as another atom but a different amount of neutrons
technological design process
recognizing the problem, proposing a solution, implementing the solution, evaluating the solution and communicating the problem
the application of tools, materials, processes and systems to solve problems and extend the human capabilities
properties of solutions that depend on the number of particles in a given volume of solvent and not on the mass of the particles
a substance consisting of two or more different elements chemically bonded together in a fixed proportion by mass
electrical charges attract or repel one another with a force proportional to the product of their charges and inversely proportional to the square of their separation distance
the ratio of its mass (m) to its volume (V), a measure of how tightly the matter within it is packed together
the flow of electrons through a conductor or the addition or loss of electrons from a material
any process either caused or accompanied by the passage of an electric current and involving in most cases the transfer of electrons between two substances-one solid and the other a liquid
electromagnetic waves can exhibit a distribution of frequencies ranging below radio wave to light beyond the visible
a type of atom that is distinguished by its atomic number, i.e., by the number of protons in its nucleus
engineering design process
the process or method used by engineers to solve a problem 1. Define a problem 2. Generate ideas 3. Select a solution and test it 4. Make the item 5. Evaluate the item 6. Communicate the solution with others 7. Present the results
a condition in which all acting influences are canceled by others, resulting in a stable, balanced or unchanging system
a process or reaction that releases energy usually in the form of heat, but it can also release energy in the form of light, sound or electricity
a massive, gravitationally bound system consisting of stars, an interstellar medium of gas and dust and dark matter
a special type of dipole-dipole force that exists between an electronegative atom and a hydrogen atom bonded to Nitrogen, Oxygen or Fluorine
rock produced under conditions involving intense heat, as rocks of volcanic origin or rocks crystallized from molten magma
a creation of the mind, and both the process to arrive at this creation and the capabilities to create it
Law of Superposition
a general law stating that in any sequence of sediments or rocks that has not been overturned, the youngest sediments or rocks are at the top of the sequence and the oldest are at the bottom
the interdisciplinary scientific study of the atmosphere and focuses on weather processes and forecasting
a substance that is not the same from one sample to the next, and a mixture can be separated into its parts; two or more substances that are mixed together but not chemically joined
the smallest particle of a substance that retains the chemical and physical properties of the substance and is composed of two or more atoms
deals with materials and machines on an incredibly tiny scale - less than one billionth of a meter
a process in which two nuclei or nuclear particles collide to produce products different from the initial particles
a tabular method of displaying the chemical elements; used to illustrate recurring trends in the properties of the elements
the process in which an unstable atomic nucleus loses energy by emitting radiation in the form of particles or electromagnetic waves
the process by which rocks are formed, altered, destroyed, and reformed by geological processes
the rupture of geological faults, huge amounts of gas migration, mainly methane deep within the earth, but also by volcanic activity, landslides, mine blasts and nuclear experiments
the measure of the heat energy required to increase the temperature of a unit quantity of a substance by a certain temperature interval
the three-dimensional arrangement of physical attributes (shape, height, depth) of a land surface in a place or region
a model which is used for predicting the shapes of individual molecules based upon their extent of electron-pair electrostatic repulsion
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