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❶Endothermic and Exothermic Reactions All reactions can be classified as endothermic storing energy or exothermic releasing energy.

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Our videos cover everything from high school through college such as AP Chemistry, Organic Chemistry, and Biochemistry. Our lessons make difficult concepts easy to understand so you can get a 5 on the AP, dominate ochem, or just finish your current assignment. Each lesson also comes with several completely worked out examples that mimic what you'll likely see in class.

Why waste your time on YouTube or spend tons of money on a private tutor when you've got Educator. Learn chemistry the time-saving way with our video lessons that let you search and jump directly to your problem topic.

Whether you're just taking an elective class, preparing to become a health professional, or you're a STEM major, we cover all the necessary college chemistry courses. Geared towards middle school students and filled with tons of interesting chemistry and physics principles from Properties of Matter to Waves and Motion.

Our normal-paced General Chemistry course that is perfect for both high school and first year college students. Ow explains everything in easy-to-understand language and includes several completely worked-out examples for every lesson. Everything you'll see in class is covered from Stoichiometry to Periodic Trends and Solutions.

Our slower but more in-depth General Chemistry that is also perfect for high school and college students who want more explanations about chemical phenomena. Everything you'll see in homework and exams is covered from Atoms to Chemical Reactions, Gases, and Kinetics.

Want to ace the AP Chemistry exam? With online chemistry tutoring you're able to improve your grades on your schedule. We know that great scores take work. That's why we design our courses to be efficient, targeted and strategic so you make the most of every minute you spend prepping. Our experts know how to design lessons based on how you're learning.

We love our teachers, and so will you. Teach or Tutor for Us. The Princeton Review is not affiliated with Princeton University. Read on for more information about electron delocalization! The Aufbau principle describes how electrons fill energy levels in an atom. In order to write the electron configuration of an atom, one must know how the subshells fill. Using the diagonal rule will certainly help with this process. Read on for more information about the Aufbau principle.

Hybridization occurs when two atomic orbitals combine to form one hybrid orbital. One of the more common types of hybridization is sp 3 hybridization, which is described in detail in this lesson. Read on for more detailed information on the intricacies of electron orbitals. Electrolysis occurs in electrolytic cells when an electrical current causes a nonspontaneous oxidation-reduction reaction.

This lesson describes how electrolysis is used, including extracting pure metals from the Earth's crust. Read on for more information on the process of electrolysis! Voltaic cells use chemical energy to do electrical work. A redox reaction occurs, and the electrons are forced through an electrical circuit.

Read on to find out the specifics on how voltaic cells power electrical processes! The study of nuclear reactions is called radiation chemistry. A nuclear reaction involves the nucleus of an atom. These types of processes were first discovered by Marie Curie in the late s. Read on for more details about radiation chemistry! Introduces carbon structures and interactions between molecules. Basic vocabulary and ideas are introduced concerning alcohols and hydrocarbons.

Combustion of a hydrocarbon is also discussed briefly. Alkanes and alkenes are both hydrocarbons that follow the standard nomenclature procedures. Learn whether alkanes and alkenes are saturated or unsaturated, which is more reactive, and how to name a compound by looking at its structure in this lesson. When aromatic compounds undergo reactions with electrophiles, a substitution reaction occurs. Read on for an in-depth description of how these reactions occur!

Halogenoalkanes are exciting because, compared to alkanes, they are very highly reactive when paired with nucleophiles or bases. Halogenoalkanes are also SP3 hybridized. Read this lesson to find out more information on halogenoalkanes! This lesson also covers aldol condensation as well as the Robinson annulation reaction.

Read on for more details about these chemical processes. An elimination reaction occurs when a starting product breaks down into two new products that contain all the atoms of the original reactant.

There are two types: Read this lesson for more information about elimination reactions. Nucleophilic substitution reactions occur when a nucleophile interacts with an electrophile. Read this lesson for a step by step explanation of what happens during a nucleophilic substitution reaction.

This lesson also covers nucleophilic substitution including the SN1 and SN2 mechanisms. Effects on kinetic rate, alkyl group, and more are discussed in this lesson. Because many students cannot and do not draw organic structures correctly, one of our most prominent chemistry tutors took the time to explain how to draw cyclohexane rings in great detail. She even shows more than one way to get a perfect drawing of this ring.

Read the lesson to find out how to draw these rings correctly! Stereoisomers are a category of isomers. Learn about the different categories of isomers in this lesson, and how you will study stereoisomers in chemistry and biochemistry.

Content in this section of Wyzant Lessons has been curated by tutors, as well as by Chemtutor. Wilner is happiest when he is explaining things in science pontificating , so it is natural that he has been a science teacher in high school and a teacher of chemistry at Georgia Perimeter College.

Still need help after using our chemistry resources? Use our service to find a chemistry tutor. Chemistry Help and Problems In our chemistry help section, you'll find a broad range of topics from very basic chemistry all the way through some more advanced organic chemistry topics. Heuristics Before you get into the other topics, learning HOW to learn chemistry is a great place to start, and this section will help.

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Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra is helpful. Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more.

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Combined with the chemistry help provided on this website, ChemTutor Excalibur provides all the chemistry help any high school or college student needs to excel in chemistry. I have published these notes to provide chemistry help for high school and college chemistry students.

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Get the most out of your college chemistry classes by supplementing your study with our College Chemistry: Help and Review course. You'll go over the topics you're studying in class with our short video lessons and can test your understanding using the chapter tests and quizzes. The following is a list of chemistry topics typically covered during the first year of high school chemistry or the first semester of college chemistry. Clicking on the topic will bring up a video lesson and accompanying explanation, while choosing “Practice Problems” shares a worksheet with a video showing how to work each of the problems.

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Chemistry Help and Problems In our chemistry help section, you'll find a broad range of topics from very basic chemistry all the way through some more advanced organic chemistry topics. Browse our chemistry topics below, or contact one of our chemistry tutors for private help. Students in need of College Chemistry help will benefit greatly from our interactive syllabus. We break down all of the key elements so you can get adequate College Chemistry help. With the imperative study concepts and relevant practice questions right at your fingertips, you’ll have plenty of .