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Chapter 3 lessons1-2

TermDefinition
Matter Any material that has space and occupies space.
Atom The basic unit of matter; the smallest unit that maintains the chemical properties of an element.
Element A chemical substance with a unique set of properties that cannot be broken down into substances with other properties.
Nucleus The central core of an atom; consists of protons and neutrons.
Molecule A combination of two or more atoms.
Compound A substance combining atoms of two or more different elements.
Hydrocarbon An organic compound combining hydrogen and carbon.
Solution A mixture in which all the ingredients are evenly distributed.
Macromolecules A large organic molecule; includes proteins, nuclear acids, carbohydrates, and lipids.
Protein An organic compound made of carbon, oxygen, hydrogen, nitrogen, and sometimes sulfur.
Nucleic acid The macromolecule the carries hereditary information; includes DNA and RNA.
Carbohydrate An organic compound that consists of atoms of carbon, hydrogen, and oxygen.
Lipid Chemically diverse compound that does not dissolve in water.
pH A measure of the acidity or alkalinity(basicity) of a solution.
Feedback loop A circular process that describes how an event is both a cause and effect in the same system; can be a positive loop or a negative feedback.
Erosion The removal of soil by water, win, ice, or gravity.
Geosphere All of the rock at and below Earth's surface.
Lithosphere Sphere made up of the hard rock on and just below Earth's surface; thee outermost layer of both Earth and its geosphere.
Biosphere the Earth and all of its organisms and environment.
Atmosphere The thin layer of gases that surrounds Earth.
Hydrosphere All of the water - salt water and fresh water, in the form of liquid , ice, or vapor- above and below Earth's surface and in the atmosphere.
Created by: masonmayor
 

 



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