Term
| Safety goggles must be worn |
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Definition
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Term
| Waste chemicals are to be disposed |
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Definition
| In the properly labeled waste container |
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Term
| Make sure when heating a liquid that there is a |
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Definition
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Definition
| Yell fire and alert instructor and pull fire alarm if it is a large fire and evacuate the building |
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Term
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Definition
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Term
| If chemicals spill on your body |
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Definition
| Wash your hands and arms immediately with water or go to the safety shower if the chemicals are on your body and wash your eyes at the eye wash station for 15-30 minutes if chemicals are in your eyes |
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Term
| The uncertainty in electronic measuring tools is |
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Definition
| +/- 1 in the final digit displayed |
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Term
| The uncertainty of a digital thermometer is |
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Definition
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Term
| The uncertainty of a 20 mL cylinder is |
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Definition
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Term
| The uncertainty of a 400 mL beaker is |
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Definition
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Term
| The uncertainty of a burette is |
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Definition
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Term
| The uncertainty of a thermometer is |
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Definition
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Term
| The uncertainty of a ruler with mm is |
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Definition
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Term
| In addition and subtraction the amount of significant figures |
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Definition
| Is rounded off to have the same number of decimal places as the number of decimal places in the most uncertain data used |
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Term
| In multiplication and division, the amount of significant figures is |
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Definition
| Rounded off to have the same number of significant figures as the number of significant figures in the measured quantity with the least number of significant figures |
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Term
| If the air inlets of a Bunsen burner is opened, the flame goes from |
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Definition
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Term
| A solution is added to a burette by |
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Definition
| Holding the burette in an almost horizontal positon and allowing the liquid to run down the side of the burette while rotating the burette alone it long axis to allow the liquid to contact all parts of the inner surface of the burette |
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Term
| Properties whose values depend on the amount of sample or material. Examples are mass and volume. |
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Definition
| Extensive physical properties |
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Term
| Properties whose values are independent of the amount or size of the sample. Examples are pressure and temperature. |
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Definition
| Intensive physical properties |
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Term
| The mass per unit volume. Two extensive variables lead to and intensive one. |
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Definition
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Term
| Defined for liquids and solids as the ratio of the density of a material divided by the density of water. The temperature of the water is often 4 degrees C. No units. |
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Definition
| Specific gravity SGx = dx/dwater |
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Term
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Definition
| V = a^3, a = length of a side of the cube |
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Term
| The volume of a sphere is |
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Definition
| V = 4/3πr^3, r = radius of sphere |
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Term
| The volume of a right cylinder is |
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Definition
| V = πr^2h, r = radius of circular cross section, h = height of the cylinder |
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Term
| To gauge the uncertainty in a volume measurement |
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Definition
| The possible maximum and minimum values for the quantity based on the uncertainty in the original measurements must be calculated |
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Term
| The volume in a graduated cylinder is found by |
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Definition
| Taking the difference between the initial volume and the volume with the object |
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Term
| The largest volume displacement is found by |
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Definition
| Subtracting the largest final volume reading (+0.1) from the smallest initial volume reading (-0.1) |
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Term
| The smallest volume displacement is found by |
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Definition
| Subtracting the smallest final volume reading (-0.1) from the largest initial volume reading (+0.1) |
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Term
| The largest value of the density is found by |
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Definition
| Dividing the largest mass (+0.1) by the smallest volume of liquid delivered (-0.1) |
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Term
| The smallest value of the density of the liquid is found by |
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Definition
| Dividing the smallest mass (-0.1) by the largest volume of liquid delivered (+0.1) |
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Term
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Definition
| part per thousand relative error = ((dn - dave)/dave)*1000 |
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Term
| Dalton's atomic theory was consistent with |
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Definition
| The experimental laws of definite composition and multiple proportions that gave it great credibility |
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Term
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Definition
| One divides the moles of each component by the number of moles of the component with the lesser or least number of moles |
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Term
The formula derived from the mole ratios.
Example: 1 mole Fe and 3 moles of Br yields the formula FeBr3 |
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Definition
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Term
| The amount of a product formed when 100% of the limiting reactant is converted to product |
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Definition
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Term
| The amount of a product formed during a chemical reaction |
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Definition
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Term
| ((actual yield)/(theoretical yield))100 |
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Definition
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Term
| What is the proper method to separate mixtures |
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Definition
| Using a filter flask, Buchner funnel, aspirator set up |
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Term
| Substances with the ability to react with both acids and bases are |
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Definition
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Term
| Double sulfate salts that contain two different ionic sulfate compounds in a defined ratio. Are typically hydrated compounds containing a stoichiometric amount of water molecules. |
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Definition
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Term
| Compounds with molecules of water involved in their formula. Some of the water molecules in these compounds may be chemically bonded to the metal atoms by coordinate covalent bonds. |
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Definition
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Term
|measured - accepted|/accepted (100%)
Used for accuracy
accepted = true or standard of comparison value
smaller = greatest accuracy
larger = least accurate |
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Definition
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Term
| Truthfulness or closeness to an accepted value, on average |
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Definition
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Term
| Repeatability of successive measurements |
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Definition
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