The only thing smaller than atoms are their subatomic particles; electrons, protons, and neutrons. Not even under a complex microscopic can we view the individual electrons that surround an atom’s nuclei. The Lewis Dot Structure is a visual which represents the outermost shell of electrons, also known as valence electrons, and possible covalent bonds within an atom or molecule.
Units are extremely important in the study of science. Without them, a number is just a number without any meaning. The Système international d’unités (SI system) is a standard that simplifies international scientific communication. This system comprises seven base quantities and 16 prefixes that designate amount.
In biochemistry, DNA holds the genetic code for life. When genes are expressed, the DNA is transcribed into mRNA that is then translated into proteins. Proteins are complex biomolecules that perform critical roles in the cell. These proteins are made up of smaller building blocks called amino acids (AA).
As we approach AP® exam time, you’ll want to explore how to best prepare yourself for the AP® English Literature free-response section of the exam. Free-response makes up 55% of your test score. In this section, you will write three essays regarding prompts from poetry, a selected passage, and a work of literary fiction you select.
The brain is an immensely complicated and intricate organ, and by far the most complex organ to understand in the human body. Unfortunately for anyone who is taking AP® Psychology, it’s also something that you’re expected to understand for the AP® Psychology Exam.
If you’re starting to think about college and looking to gain both high school and college science credit at the same time, taking the AP® Environmental Science class and the corresponding APES exam can be very appealing. Not only will you have the opportunity to learn more about environmental science, but you’ll also have the chance to experience a college level course and gain skills that will help you succeed in your future college classes. Stay tuned and you will learn everything you need to know to help you make the best and most informed decision.
The AP® English Language exam tests your knowledge of English language and focuses on rhetorical analysis of nonfiction texts, along with the development and revision of well-reasoned, evidence-centered analytic and argumentative writing.
Most people think AP® Physics C: Mechanics is one of the toughest AP® courses. It includes complex calculus, mind-bending concepts, and a huge collection of equations that you’ll need to memorize. However, with the right study guide and the best resources, AP® Physics shouldn’t intimidate you.
The German Tank Problem is a famous statistical problem that helped the Allied Forces during World War II, and can help you with your AP® Statistics review. Statisticians use estimators when dealing with samples from a larger population. Often, it can be useful to know the size of the total population when you are working with a limited sample size from a population of unknown size.
In 2013, with the introduction of a new exam, the AP® Chemistry community was tossed in a new direction (or so it would seem). Content standards were replaced with Big Ideas, Enduring Understandings, Essential Knowledge and Learning Objectives. The committee of college professors, secondary teachers, and College Board elite sacrificed breadth for depth and away went such topics as Molecular Orbital Theory and Colligative Properties. While topics such as organic chemistry are not explicitly named, their compounds and names continue to show up in questions related to bonding theory and hybridization. With all these changes at work, we suddenly saw the introduction of “Science Practices”, but what exactly are they? In short, “Science Practices” refers to lab experiments and the need to expose our AP® Chemistry students to them.