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Liv Envir Topic 9
Stack #20765
| Question | Answer |
|---|---|
| Acid | a compound that releases hydrogen ions when dissolved in water; a substance, such as vinegar; with a sour taste |
| Balance | a tool that measures mass by comparing the unknown mass of an object with the known mass |
| Base | a compound that produces hydroxide ions when dissolved in water |
| Chromatography | a laboratory technique used to separate mixtures of molecules |
| Compound light microscope | a tool that uses more than one lens and a light source to magnify an object |
| Dichotomous key | a guide that compares pairs of observable traits to help the user identify an organism |
| Dissection | the act of cutting apart a dead organism to examine its internal structure |
| Electronic balance | a balance that measures mass automatically |
| Electrophoresis | a tool that allows scientists to separate mixtures of molecules according to size |
| Graduated cylinder | a tool used to measure the volume of a liquid |
| Indicator | a substance that changes color when it encounters certain chemical conditions |
| Magnification | the ability of a microscope to make an object appear larger |
| Mass | a measure of the quantity of matter in an object |
| Metric ruler | a tool used to measure the length of an object |
| Microscope | a tool that uses a lens or a combination of lenses to magnify an object |
| Stain | a chemical used to make cell structures more visible when viewed under a microscope |
| Stereoscope | a microscope that uses two eyepieces: often used for dissections |
| Triple beam balance | a tool, with a single pan and three bars calibrated in grams, used to measure mass |
| Volume | the space occupied by something |