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Science TTK


covalent bond a chemical bond formed when two atoms share one or more pairs of valence electrons.
synthesis a type of chemical reaction in which two or more substances combine and form one compound.
decomposition a type of chemical reaction in which one compound breaks down and forms two or more substances.
acid a substance that produces a hydronium ion when dissolved in water.
base a substance that produces hydroxide ions when dissolved in water
solution another name for a homogeneous mixture.
indicator a compound that changes color at different pH values when it reacts with acidic or basic solutions
solute any substance in a solution other than the solvent
solvent the substance that exists in the greatest quantity in a solution
concentrated the amount of a particular solute in a given amount of solution
OH- a mathematical equation that describes the relationship between voltage, current, and resistance
chemical reaction a process in which atoms of one or more substances rearrange to form one or more new substances
electron dot diagram a model that represents valence electrons in an atom as dots around the element's chemical symbol
reactants a starting substance in a chemical reaction
products a substance produced by a chemical reaction
periodic table a chart of the elements arranged into rows and columns according to their physical and chemical properties
atomic number the number of protons in an atom of an element
atomic mass the average mass of the element's isotopes, weighted according to the abundance of each isotope
ionic bond the attraction between positively and negatively charged ions in an ionic compound
metallic bond a bond formed when many metal atoms share their pooled valence electrons
molecule two or more atoms that are held together by covalent bonds and act as a unit
amplitude the maximum distance a wave varies from its rest position
electromagnetic wave a transverse wave that can travel through empty space and through matter
interference occurs when waves overlap and combine to form a new wave
reflection the bouncing of a wave off a surface
refraction the change in direction of a wave as it changes speed in moving from one medium to another
diffraction the change in direction of a wave when it travels by the edge of an object or through an opening
alternating current an electric current that changes direction in a regular pattern
magnetic field where the lines of force meet and cause magnets
Created by: 2018grellerj