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This glossary of chemistry terms is a list of terms and definitions relevant to chemistry, including chemical laws, diagrams and formulae, laboratory tools, glassware, and equipment. Chemistry is a physical science concerned with the composition, structure, and properties of matter , as well as the changes it undergoes during chemical reactions ...
Serving sizes on nutrition labelling on food packages in Canada employ the metric cup of 250 mL, with nutrition labelling in the US using a cup of 240 mL, based on the US customary cup. [ 4 ] * In the UK, teaspoons and tablespoons are formally 1 / 160 and 1 / 40 of an imperial pint (3·55 mL and 14·21 mL), respectively.
Another example is the bagel, for which the diameter and calories have both doubled over the same 20 years. Other foods that have doubled in calories include American staples of spaghetti with meatballs and cheeseburgers. Furthermore, a serving of French fries and a can of soda tripled their calories and serving size. [9]
The volume of a container is generally understood to be the capacity of the container; i.e., the amount of fluid (gas or liquid) that the container could hold, rather than the amount of space the container itself displaces. By metonymy, the term "volume" sometimes is used to refer to the corresponding region (e.g., bounding volume). [2] [3]
Volume fraction, which is widely used in chemistry (commonly denoted as v/v), is defined as the volume of a particular component divided by the sum of all components in the mixture when they are measured separately. For example, to make 100 mL of 50% alc/vol ethanol solution, water would be added to 50 mL of ethanol to make up exactly 100 mL.
The serving size is simply the amount of the food that the label’s nutritional information applies to. According to the FDA , “the serving size reflects the amount that people typically eat or ...
Dansyl chloride solution in a cuvette. In laboratories, a cuvette (French: cuvette, lit. 'little vessel') is a small tube-like container with straight sides and a circular or square cross-section.
In laboratory equipment, a beaker is generally a cylindrical container with a flat bottom. [1] Most also have a small spout (or "beak") to aid pouring, as shown in the picture. Beakers are available in a wide range of sizes, from one milliliter up to several liters. A beaker is distinguished from a flask by having straight rather than sloping ...