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chapter 6-vocab
| Term | Definition |
|---|---|
| element | substances that can't be broken down into simpler chemical substances |
| atom | smallest particle of an element that has the characteristics of that element |
| nucleus | center of an atom |
| isotope | atoms of the samww element that have diffrent numbers of neutrons |
| compound | a substance that is composed of atoms of two or more diffrent elements that are chemically combined |
| covalent bond | when 2 atoms share electrons, such as 2 hydrogen atoms sharing electrons the force that holds them together |
| molecule | a group of atoms held together by covalent bonds |
| ion | a charge article made of atoms |
| ionic bond | the attractive forces between 2 ions of opposite charge |
| metabolism | all of the chemical reactions that occur within an organism |
| solution | a mixture in which one or more substance are distributed evenly in another substance |
| PH | measure of how acidic or basic a solution is |
| acid | any substance that form hydrogen |
| base | any substance that forms hydroxide |
| polar molecule | is a molecule with an unequally distribution of charge that is each molecule has a positive end and negative end |
| hydrogen bond | attraction of opposite charges between hydrogen and oxygen forms a weak bond |
| diffusion | the net movement of particles from an area of high concentration to an area of low concentration |
| dynamic equilibrium | which there is continuous movement, but no overall concentration |
| isomer | componds that have the same chemical formula but different three-demensional stucture |
| polymer | a large molecule formed when many smaller molecules bond together |
| carbohydrates | is a biomolecule composed of carbon, hydtogen, and oxygen |
| lipid | large biomolecules that are made mostly of carbon witha small amount of of oxygen |
| protein | large complex polymer composed of carbon hydrogen oxygen nitrogen and sometimes sulfur |
| amino acid | basic building blocks of proteins |
| peptide bond | the covalent bond formed between the amino acid |
| enzyme | protein that canges the rate of a chemical reaction |
| nucleic acid | a complex biomolecule that stores cellular info in the form of a code |
| nucleotide | nucleic acid are polymers made of subunits |
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devinw53
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