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If you have a given mass of a compound, you can calculate the number of moles. Conversely, if you know how many moles of the compound you have, you can calculate its mass. For either calculation, you need to know…
Slope is a key part of linear equations, revealing not only how steep a line is but also which direction it travels. Lines with a positive slope move up and to the right on a graph, while lines with a…
Every ecosystem is made up of three broad components: producers, consumers and decomposers. Producers are organisms that create food from inorganic matter. The best examples of producers are plants, lichens and algae, which convert water, sunlight and carbon dioxide into…
Water freezes at 32 degrees Fahrenheit (0 degrees Celsius), but when a solute such as sugar is added, the freezing point changes. The sugar molecules prevent the water from making hydrogen bonds, which are required for solidity, and the water…
Rounding numbers up or down is a way of approximating them when the additional accuracy is not needed. In particular, decimals accurate to several places can become unwieldy and difficult to remember, so in a complex calculation, you may want…
Newton scooters, or Newton cars, are demonstrations of Newton’s third law of motion, also known as the law of interaction. The principle behind this law is that for each action, there is an equal and opposite reaction. Newton scooters come…
The perimeter of a geometric figure is defined as the measurement of the boundary around a given area. When calculating the perimeter of a standard polygon, the perimeter can often be found by adding the side lengths of a given…
Calculating the force in a wide range of situations is crucial to physics. Most of the time, Newton’s second law (F = ma) is all you need, but this basic approach isn’t always the most direct way to tackle every…
When strong acids are placed in water, they completely dissociate. That is, all of the acid (HA) separates into protons (H+) and their companion anions (A¯). In contrast, weak acids placed in aqueous solution do not completely dissociate. The extent…
When we look at all of the celestial bodies in our solar system, there are many distinctions and categories to decipher. The gas giants (or jovian planets) – Jupiter, Saturn, Uranus, and Neptune – are the largest, independently orbiting planets…
