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DE Science
| Question | Answer |
|---|---|
| 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
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