| Question |
 |
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| Answer |
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| acid |
any substance that forms hydrogen ion in water |
| atom |
the smallest particle of an element that has the characteristics of the element |
| base |
any substance that forms hydroxide ions in water |
| compound |
substance composed of atoms of two or more different elements that are chemically combined |
| covalent bond |
the force that holds 2 atoms together |
| element |
substance that can't be broken down into simpler chemical substances |
| ion |
charged particle |
| ionic bond |
attractive force between two ions of opposite charge |
| isotope |
atoms of the same element that have different numbers of neutrons |
| metabolism |
all of the chemical reactions that occur within an organism |
| mixture |
combination of substances in which that individual components retain their own properties |
| molecule |
group of atoms held by covalent bonds and having no overall charge |
| nucleus |
center of an atom |
| PH |
measure of how acidic or basic a solution is |
| solution |
mixture in which one or more substances are distributed evenly in another substances |
| diffusion |
net movement of particle from an area of higher concentration eventually resulting in distribution |
| dynamic equilibrium |
continues movement but no overall concentration change |
| hydrogen bond |
a weak bond caused by the attraction of opposite charges |
| polar molecule |
molecule with an unequal distribution of charge |
| amino acid |
basic building blocks of proteins |
| carbohydrate |
organic compound composed of carbon, hydrogen, and oxygen with a ration of about two hydrogen atoms and one oxygen atom |
| enzyme |
protein that changes the rate of a chemical reaction |
| isomer |
compounds that have the same simple formula but different three dimensional structures |
| lipid |
organic compounds that have a large proportion of CH bonds and less oxygen than carbohydrates |
| nucleic acid |
a complex macro molecule that stores cellular information in the form of a code |
| peptide bond |
covalent bond formed between the amino acids |
| polymer |
large molecule formed with smaller molecules |
| protein |
large complex polymer composed of carbon, hydrogen, oxygen, nitrogen, and usually sulfur |
HHS Shrek
