Chem+Basics

=__The Chemical Basics of Life__= __Atom__- is the basic unit of matter in the study of chemistry __Nucleus__- is the center of the atom, this organelle contains the protrons and nuetrons __Electron__- Is a negative charged molecule that are in constsant motion in the space surrounding the nucleus __Proton__- positivly charged ion __Neutron__- is a neutral ion that has no charge __Element__- is a pure substance that consists entirely of one type of atom __Isotope__- atoms of the same element that have a different number of neutrons __Compound__-is a substance formed by chemical combinations of two or more elements in definite proportions __Ionic Bond__- is formed when one or more elctrons are transferred from one atom to another __Covalent Bond__- is a bond formed when electrons are shared __**Propertie of Water**__ __Molecule__- is the smallest unit of most compounds __Water Molecule__- is neutral like all molecules it consists of 10 protrons and electrons it is also a polar molecule what this means is that their is an unevan distributation of electrons between the oxygen and hydrogen atoms __[]__ __Cohesion__- is the attraction between molecules of the same substance __Adhesion__- is the attraction between molecules of diffrent substances __Mixture__- is a material composed of two or more elements or compounds that are physically mixed together but not chemically __Solution__- Is a mixture where all of the components are evenly distributed __Solute__- is the substance being dissolved __Solvent__- is the substance doing the dissolving __Suspension__- are mixtures that have materials that don't dissolve in the water when mixed __[]__ __pH scale__- system used to indicate the number of H+ ions in a solution __Acid__- a compound that forms H+ ions in a solution __Base__- a compound that produces OH- ions in a solution __Buffers__- are weakened acids or bases that can react with strong acids or bases to prevent sudden changes in pH


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