Introductory Chemistry: Units, Conversions, and Physical Properties

Vocabulary flashcards covering unit conversions, scientific notation rules, density concepts, and problem-solving frameworks from the lecture transcript.

Density

A physical property defined as the mass per unit volume of a substance, expressed by the equation $d = \frac{m}{v}$.

Measurement

A quantitative observation that must always consist of both a number and a unit.

Scientific Notation Standard Form

A numerical format written as $a \times 10^b$, where $a$ contains a single non-zero digit to the left of the decimal point and the exponent $b$ is an integer.

Alloy

A homogeneous mixture made up of multiple metals melted down and combined together.

Mathematical Meaning of "Per"

Indicates division, meaning the unit following "per" is placed in the denominator.

Milliliter to Cubic Centimeter Equivalence

A unit equality where $1\,\text{mL}$ is exactly equal to $1\,\text{cm}^3$.

Pound to Gram Conversion Relationship

An equivalence relationship where $1\,\text{lb}$ is equal to $453.6\,\text{g}$.

Kilogram to Pound Conversion Relationship

An equivalence relationship where $1\,\text{kg}$ is equal to $2.205\,\text{lbs}$.

Problem-Solving Framework Questions

A three-step approach used to break down difficult problems: "Where are we going?" (What am I looking for?), "What do we know?" (What information is given or known?), and "How do we get there?"

Density of Gold

A known physical constant value given as $19.3\,\text{g/cm}^3$.