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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 ...
Alcohol measurements are units of measurement for determining amounts of beverage alcohol.Alcohol concentration in beverages is commonly expressed as alcohol by volume (ABV), ranging from less than 0.1% in fruit juices to up to 98% in rare cases of spirits.
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]
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.
Energy density is the amount of energy per mass or volume of food. The energy density of a food can be determined from the label by dividing the energy per serving (usually in kilojoules or food calories) by the serving size (usually in grams, milliliters or fluid ounces). An energy unit commonly used in nutritional contexts within non-metric ...
The application of a small force, from a small rocket engine for example, are sometimes used to provide sufficient acceleration to reaggregate (settle) the liquid propellant at the bottom of the tank near the engine propellant inlet prior to ignition of the main engine(s). Engines devoted to this single purpose are typically called ullage motors.
Take, for example, a can of Campbell’s chicken noodle soup. According to its nutrition facts label, a serving contains 39% of the recommended daily sodium. But a single can has 2.5 servings.
Quantities, Units and Symbols in Physical Chemistry, also known as the Green Book, is a compilation of terms and symbols widely used in the field of physical chemistry. It also includes a table of physical constants , tables listing the properties of elementary particles , chemical elements , and nuclides , and information about conversion ...