The Science of Life Lecture Series

In all of science, there are prefixes which are used to are attached to units in order to have a word representation of having differing multiples of 10.  An example of this is the fact that a kilometer is one meter times 1000, or one meter times "three multiples of 10" ($10^3$).  We can also go the other way; a millimeter is one meter divided by 1000, or one meter divided by "three multiples of 10" ($10^3$).  When we have a situation of "divided by $10^3$", as mentioned in the Algebra Lecture Series, it is equivalent to saying "multiplied by $10^-3$".  Notice that the "divided by" has a positive exponent while the "divided by" has a negative exponent.  That stems from the exponent subtraction rule in Algebra. Here's the list of all of the prefixes and what they represent in two numeric forms: Prefix Symbol Multiplier Exponential yotta Y 1,000,000,000,000,000,000,000,0...

One thing to know about Chemistry -- and all of science -- is that unless one group of scientists are intentionally trying to experimentally confirm the results of a specific experiment done by another group of scientists, no two scientists typically approach the same question the same way.  Even as this may be the case, all scientists are using the same general scientific method.  The scientific method is the backbone of all scientific experiments and gathering of all scientific knowledge.  In very much the same way all humans look pretty similar (but not exactly the same), the scientific method makes it so the experiments that two different scientists perform on the same concept with look similar, but not exactly the same. When we run an experiment, we start by collecting information.  How do things change if I slowly change this parameter only?  How about if I change that parameter only?  Now that I have the previous two questions answered, now let...

Hello internet, and welcome to the Science of Life General Chemistry lecture series.  In this session, I'll cover some of the properties of the materials in which chemists are interested. Properties There are two types of properties which we deal with in General Chemistry.  There are more types, but there are specifically two that are important for this course.  There are physical properties (properties which do not describe the chemistry of the substance, such as the phase) and chemical properties (which do describe the chemistry of the substance, such as whether or not it's an acid).  Properties can also be classed as either extrinsic (depends on the quantity of the substance, such as the mass) or intrinsic (does not depend on the quantity, such as melting point).  Boiling point is an intrinsic physical property; it doesn't describe the chemistry of the substance (alas the physical part) and the boiling point at that pressure doesn't change with quantit...