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DE Science

QuestionAnswer
Chemical Change A change in a substance that changes it's identity.
Chemical Property Any characteristic of a material that indicates it can undergo a certain chemical change.
Colloid Heterogeneous mixture with particles that never settle and that are large enough to scatter light.
Compound Two or more elements chemically combined, can only be separated by chemical means.
Distillation a process used to separate two substances in a mixture by evaporating a liquid and recondensing it's vapor.
Element Matter containing the same kinds of atoms.
Heterogeneous mixture Mixture w/ easily distinguishable materials.
Homogenous Mixture Mixture w/ non-distinguishable materials blended evenly throughout.
Law of Conservation of Mass the total mass of all reactants in a chemical reaction is equal to the total mass of all products formed
Mixture two or more substances physically combined, can easily be separated by physical means
Physical Change any change in size, shape, or state of matter in which the identity of the substance remains the same
Physical property any characteristic of a material that can be observed without changing the identity of the substance
Solution homogenous mixture containing microscopic particles in a liquid that remain uniformly and constantly mixed
Substance type of matter w. fixed composition.
Suspension heterogeneous mixture containing visible particles in a liquid that will settle out over time
Tyndall Effect scattering of light by colloid particles.
Acid any substance that produces hydrogen ions, H+, in a water solution
Amino acid building blocks of proteins, made up of carbon, oxygen, nitrogen, hydrogen, and sometimes sulfer
atom the smallest particle of an element that still retains the properties of that element
Base any substance that produces hydroxide ions, -OH, in a water solution
Carbohydrate complex molecule formed by condensation, made up of carbon, hydrogen, and oxygen atoms in a ratio of 2 H atoms and 1 O atom for every C atom
Compound a substance containing two or more elements chemically combined
Covalent bond a bond formed between two or more atoms that are sharing electrons
Diffusion the movement of substances from an area of high concentration to low concentration
Dynamic equilibrium equal movement of substances across a membrane
Element Matter containing the same kinds of atoms.
Enzyme a protein that changes the rate of a chemical reaction involved in nearly all metabolic processes
Ionic Bond a bond formed between oppositely charged ions in an ionic compound
ion a charged particle that either has more of fewer electrons that protons
Isomer compound with identical chemical formulas but different molecular structures and shapes
Isotope atoms of same element that have different numbers of neutrons
lipid large biomolecules made of fatty acids, mostly carbon and hydrogen + small amounts of oxygen, that are nonpolar thus insoluble in water
Metabolism
Hydrogen bond
Mixture two or more substances physically combined, can easily be separated by physical means
Molecule two or more atoms chemically combined
Nucleic acid polymers made of nucleotides, stores cellular information in the form of a code
Nucleotide
nucleus
peptide bond covalent bond formed between amino acids
pH a measure of the concentration of hydronium ions in a solution using a scale ranging from 0-14, with 0 being the most acidic and 14 being the most basic
polar molecule a molecule with a slightly positive and slightly negative end as a result of electrons being shared unequally
polymer class of natural or synthetic substances made up of many smaller, simple molecules, called monomers, arranged in large chains
Protein large complex polymer formed when amino acids bond together in long chains, combine when an H+ ion from the amino group of one amino acid and an -OH ion from the carboxyl group of another amino acid are removed to form a water molecule resulting in the tw
solution homogenous mixture containing microscopic particles in a liquid that remain uniformly and constantly mixed
Created by: Draketplc