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Rain forests offer some of the most amazing environments on earth. These forests, characterized by heavy rainfall and thick vegetation, provide an abundance and variety in both plant and animal life. Almost every year, scientists discover new animal and plant…
In a chemical reaction, delta H represents the sum of the heats of formation, commonly measured in kilojoules per mol (kJ/mol), of the products minus the sum of those of the reactants. The letter H in this form is equal…
The pH scale ranges from 0 to 14 and is a measure of acidity or alkalinity. In the classroom or lab, there are many benefits to knowing the pH of a substance. The pH can be used to determine what…
The roots of a polynomial are also called its zeroes, because the roots are the x values at which the function equals zero. When it comes to actually finding the roots, you have multiple techniques at your disposal; factoring is…
Reflectance is a measure of the incident electromagnetic radiation that is reflected by a given interface. It is closely related to reflectivity but reflectance is more applicable to thin reflecting objects. Reflectance can vary for thin objects due to variations…
Calcium chloride is a rock salt substance that is mainly used to soak up and control ice and dust particulates on roadways. It has been an inexpensive and effective choice for many years. However, according to Environment Canada’s website, studies…
Staff at production and research laboratories use high-pressure steam inside an autoclave to sterilize or remove all microorganisms from plastic containers. These containers must be rated safe for an autoclave as some plastics, such as HDPE and polyethylene, will melt…
Snakes and other reptiles have no hair or epidermal dander, making them a perfect pet for those who have allergies to more traditional pets such as cats and dogs. However, there are rare cases where one can develop an allergic…
Aside from mothers and cubs, bears tend to be fairly solitary (if mainly non-territorial) beasts, but naturally males and females need to get together to conjure up the next generation. All but one of the world’s eight bear species tend…
It’s practically a right of passage to raise a monarch butterfly from an egg into a fully-formed adult. You can find a number of educational butterfly-raising kits online and many schools use these kits while teaching kids about the life…
