Help
Options
Question
Accuracy
click to flip
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't know
Question
Precision
Remaining cards (37)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chem 111 Lab Final
Campbell University Chemistry 111
| Question | Answer |
|---|---|
| Accuracy | the extent to which a given measurement agrees with the standard value for that measurement |
| Precision | exactness; to arrive at an estimate with precision you can be precise but not accurate |
| Meniscus | the convex or concave upper surface of a column of liquid, the curvature of which is caused by surface tension eye level |
| Volume by displacement | for objects that are irregular shaped, using a graduated cylinder. Fill the cylinder up with water or so that it will at least cover the object. Take an initial reading, add the objects and take a final volume reading |
| "Best Straight Line" | data set trend |
| Density | mass/volume |
| Chemical Property | displayed when a substance undergoes a chemical reaction to produce products |
| Physical Property | color, state (solid, liquid or gas), density and melting and boiling points. the property of a substance without changing it |
| Solubility | the amount of a substance that dissolves in a given volume of solvent at a given temperature |
| Malleability | degree to which shaping is possible |
| Conductivity | the ability of a solution to conduct electricity; this property indicates the pressure of ions |
| Electrolyte | a material that dissolves in water to give a solution that conducts an electric current |
| pH | a measure of the acidity or basicity of an aqueous solution |
| Starch Test | adding two drops of iodine solution. if starch is present, a blue black color will develop |
| Hydrate | a solid compound containing water molecules combined in a definite ratio as an integral part of a crystal |
| Dehydration | a chemical reaction that involves the loss of water from the reacting molecule |
| Anhydrate | a compound that can be considered as derived from another compound by subtracting the molecules of water |
| Crucible | a refractory container used for metal, glass and pigment production |
| Precipitate | a solid that forms out of solution. to separate (a substance) in solid form a solution, as by means of a reagent |
| Alum | a crystalline solid, aluminum potassium sulfate, used in medicine as an astringency and styptic, in dying and tanning and in many technical processes |
| Filtration | a method for separating the components of a mixture containing a solid and a liquid |
| Filtrate | to filter; liquid that has been passed through a filter |
| Titration | a technique in which one solution is used to analyze another |
| Indicator | a chemical that changes color and is used to mark the end point of a titration |
| Endpoint of a Titration | the point of the titration at which the indicator changes color |
| Neutralization Reaction | an acid base reaction |
| Primary Standard | are made from compounds that have a relatively high molar mass and are readily available at relatively low cost and high purity |
| Secondary Standard | lack at least one of the criteria to make them primary standards |
| Titrant | the solution which is delivered in incremental amounts from the burrette it can be an acid or a base |
| % (m/m) | (mass of vitamin C in the tablet/ total mass of tablet) x 100% |
| Vitamin C | ascorbic acid HC6H7O6 |
| Basic | a solution that contains excess OH- |
| Electromagnetic Radiation | radiant energy that exhibits wavelike behavior and travels through space at the speed of light in a vacuum |
| Wavelength | the distance between two consecutive peaks or troughs in a wave |
| Frequency | the number of waves (cycles) per second that pass a given point in space |
| Photon | a quantum of electromagnetic radiation |
| Planck's Constant | the constant relating the change in energy for a system to the frequency of the electromagnetic radiation absorbed or emitted |
| Spectrophotometer | device for measuring light |
Created by:
ptladycarmelo
Popular Chemistry sets