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Vocab
Vocabulary for water unit in biology
| Term | Definition |
|---|---|
| Buffers | Weak acids or bases that can react with strong acids or bases to prevent sudden changes in pH |
| Macromolecules | Carbon molecules in living things that are so large |
| Monosaccharides | molecules with one sugar molecule |
| Lipids | (fats,oils,and waxes) Carbon hydrogen atoms Used to store energy and form parts of the biological membranes and waterproof coverings |
| Nucleic Acids | (hydrogen,oxygen,nitrogen,phosphorus) Nucleotides:5- carbon sugar, a phosphate group, and nitrogen base Transmits heredity info |
| Proteins | (nitrogen,carbon,hydrogen,& oxygen) polymers of amino acid Regulate cell process, form cellular structures, carry substances in & out of cells, help fight disease |
| Chemical Reaction | process that changes one set of chemicals into another set of chemicals |
| Reactants | Elements or compounds that enter into reaction |
| Activation Energy | Energy needed to get a reaction started |
| Enzyme | Protein that acts as a biological catalyst |
| Catalyst | Substance that speeds up the rate of the chemical reaction |
| Substrates | In an enzyme - catalyzed reaction, the reactants are known as substrates |
| Laesur | Lowers activation energy and speeds up reaction |
| Protons | Positive Charge |
| Neutrons | No Charge |
| Electrons | Negative charge. Electrons constantly move around the space surrounding the atom's nucleus |
| Isotopes | Atoms of the same element that differ in the # of neutrons |
| Element | Pure substance that consists entirely of one type of atom |
| Compound | substance formed by the chemical combination of two or more elements in definite proportions |
| Ionic Bonds | Forms when one or more electrons are transferred from one atom to another forming ions |
| Covalent Bond | Electrons are shared rather than transfered |
| Molecule | Atoms joined by covalent bonds |
| Van der Waals Forces | Bends the molecule down |
| Adhesion | An attraction between molecules of different substances Ex/tape and skin |
| Base | Compound that forms OH- ions in solution |
| pH Scale | Measures the concentration of hydrogen ions in a solution |
| Suspensions | Mixtures of water and undissolved materials |
| Mixture | Material composed of 2 or more elements or compounds that are physically mixed together but not chemically combined |
| Acid | Any compound that forms H+ ions in solution |
| Atom | The basic unit of matter |
| Products | Elements or compounds produced by the reaction |
| Cohesion | An attraction between 2 molecules of the same substance Ex/tape and tape |
| Solution | Mixture in which all the components are spread out |
| Solute | The substance dissolve |
| Solvent | The substance causing the dissolving |
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winnie_luv
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