(Encyclopedia) functionalism, in anthropology and sociology, a theory stressing the importance of interdependence among all behavior patterns and institutions within a social system to its long-term…
Percent CompositionChemistryThe MoleWhat's a Mole?Molar MassConverting Between Moles, Molecules, and GramsPercent Composition
Sometimes, it's handy to figure out how much of an element is present…
(Encyclopedia) vaporization, change of a liquid or solid substance to a gas or vapor. There is fundamentally no difference between the terms gas and vapor, but gas is used commonly to describe a…
ChemistryIntermediate-Level Science ProjectsChemistryCan You Be a Human Battery?What Materials Make the Best Crystals? Are All Pennies Created Equal? The penny, which has been around…
Eating fast food once in a while won’t hurt you, but too much of it can cause serious problems. Most fast food contains too many calories, salt and artery-…
Many Americans eat too much and don’t exercise enough. If you have a hard time believing that, look around. About 16% of kids ages 12 to 19 are obese and 30% are overweight. As for adults, 31% are…
Molar MassChemistryThe MoleWhat's a Mole?Molar MassConverting Between Moles, Molecules, and GramsPercent Composition
When speaking about doing chemical reactions, it isn't very handy to say that…
(Encyclopedia) multiplication, fundamental operation in arithmetic and algebra. Multiplication by a whole number can be interpreted as successive addition. For example, a number N multiplied by 3 is…
(Encyclopedia) heat, nonmechanical energy in transit, associated with differences in temperature between a system and its surroundings or between parts of the same system.
The study of heat and…
(Encyclopedia) radiumradiumrāˈdēəm [key] [Lat. radius=ray], radioactive metallic chemical element; symbol Ra; at. no. 88; mass number of most stable isotope 226; m.p. 700℃; b.p. 1,140℃; sp. gr. about…
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