Howard Hughes Medical Institute
The Mammalian Molecular Clock Model
Animals don't read clocks, so how do they know when it is time for eating, sleeping, and other cyclical needs? Viewers watch an animation of the genes and the molecular clocks inside most mammals. They compare the difference in wild...
Socratica
Chemistry: Molar Mass
Molar mass, gram molecular mass, and gram formula mass essentially mean the same thing. The brief video, part of the Socratica "Chemistry Lessons" playlist, explains how to solve these problems. It walks through the required tools, the...
TED-Ed
What Is Fat?
An animated fat molecule explains how some fats are beneficial and some are harmful. He describes triglyceride molecules and how the chemical bonding or overall shape determines the health value of each individual type of fat. This...
Socratica
Chemistry: Ionic Bonds vs Covalent Bonds (Which is Stronger?)
Both ionic and covalent bonds present as strong bonds, but which is stronger? Socratica presents a video from its chemistry playlist that attempts to answer this question. It addresses how strength is measured and the range of strengths...
Socratica
Chemistry: What Is a Metal? (Metallic Bonds)
Metals offer unique properties thanks to the structure of their valence electrons. The Socratica chemistry playlist includes this video explaining what a metal is and the properties of metals. It focuses on their structures, features,...
Socratica
Empirical Formula
With empirical formulas, it's all about keeping it simple! Introduce the concept of empirical formula to your chemistry scholars through a detailed video from Socratica's Chemistry Lessons series. The resource uses visual cues,...
Socratica
Chemistry: What Is an Ionic Bond?
Teach your class all they want to know about ionic bonds. An engaging video, part of the Socratica "Chemistry Lessons" playlist, explains what ionic bonds are and how they form. It describes multiple examples of ionic bonds and...
Socratica
Chemistry: What Is a Covalent Bond? (Polar and Nonpolar)
When it comes to covalent bonding, sharing is caring! As part of the Socratica chemistry playlist, a useful video explains the definition of covalent bonding. Then, it works through examples of single bonding, double bonding, polar...
Socratica
Chemistry: Stoichiometry Part 2—Mass to Mass Conversions
The term stoichiometry derives from the Greek words stoicheion meaning element and metron meaning measure. The second Socratica video in a two-part series within a larger chemistry playlist introduces more complex stoichiometry problems....
Socratica
Chemistry: Balancing Chemical Equations—Algebraic Method
If you love algebra, then you're gonna love this balancing method! Introduce young chemists to the algebraic method of balancing chemical equations using a video from an informative chemistry playlist. The narrator works five sample...
Socratica
Chemistry: Introduction to Unit Conversion and Dimensional Analysis (Part 2)
If you know how much carbon dioxide you produce in one breath, can you figure out how much you produce in one month? Socratica helps solve multi-step unit conversion problems. The video walks through how to set up these challenges and...
Socratica
Chemistry: Average Atomic Mass (AMU, Daltons, etc.)
Scientists created a new measurement, the atomic mass unit, which is defined as carbon 12 = 12amu. So why isn't carbon listed as having exactly 12 amu on the periodic table? An installment from the Socratica chemistry playlist answers...
Socratica
Chemistry: Percent Composition
How much oxygen is in water? Is it the same as the chemical formula? Learners observe the differences between a substance's formula and its percent composition with a video from Socratica's Chemistry Lessons series. The narrator...
Howard Hughes Medical Institute
Measuring Circadian Activity in Drosophila
How many hours should be in a day? One species of drosophila naturally prefers a 24.5 hour day, while another strongly prefers a 19-hour day. An animation and graph share data from each of these species when exposed to the typical light...