 | I. Name ionic compounds A. Naming compounds with type I cations-type I cations are cations that have one possible charge. All the elements in the first two families form type I cations. A few of the elements in groups 3 though 13 form only one cation; therefore, a few of them are type I cations-examples include Ag+, Cd2+, Zn2+, and Al3+. The cation is named first. If the cation is a "simple" cation ("simple" ion is made from only one element.) the cations is named after the element. If the cation is a polyatomic cation (a polyatomic ion is made from two or more covalently bonded elements.) you use the name that you have memorized (however, since we only talk about a couple of polyatomic cations this should not prove to be too difficult. NH4+ is the ammonium ion. The Hg22+ cation is a polyatomic ion and a type II cation.). The anion is named second. If the anion is a simple ion it takes its name from the root name of the element , and "-ide " is added. If the anion is a polyatomic anion you use the name that you have memorized. NaCl, MgCl2, AlCl3, NaNO3, BaSO4, (NH4)2SO3 B. Naming compound with type II cations-type II cations are capable of having several charges. If the cation is not from group 1 or 2, or is not Ag+,Cd2+, Zn2+, or Al3+ then assume the cation is a type II cation. The cation is named first and the charge of the cation is expressed as a Roman numeral. Occasionally suffixes, -ic and -ous, are used; however, we will not be using them. -ic is for the higher charged cation, -ous is for the lower charged cation. For example ferric is Fe3+ and ferrous is Fe2+. If the cation is a "simple" cation the cation is simply the name of the element. If the cation is a polyatomic you use the name that you have memorized. However, since we only talk about one polyatomic type II cation this should not prove to be difficult. Hg22+ is mercury (I). The anion is named second. If the anion is a simple ion it takes its name from the root name of the element , and -ide is added. If the anion is a polyatomic anion you use the name that you have memorized. Fe3O2, CrCl3, MnO, Cu(NO3)2, Hg2Cl2 Back to
Nomenclature |
FAQs
How to study Chemistry
- Space out the work. ...
- Read before lecture. ...
- Focus on the main points in lecture. ...
- Rework your notes after lecture. ...
- Keep up with the readings. ...
- Memorize essential information including reactions. ...
- Conceptual understanding is the goal. ...
- Work problems until you can teach the material to someone else.
... in the discipline of General Chemistry I are even higher, with the lowest rate in 2014-1 and 2015-1 equal to 59% and, in all other semesters, the rate was even higher than this value, reaching up to 90% failure in 2015-2 and 2016-1 (Figure 1). ... ...
Is general chemistry a hard class? ›
Chemistry is considered very hard. In fact, Chemistry is considered one of the most difficult subjects in College.
Why is basic chemistry so hard? ›
Chemistry uses a lot of math: Another aspect that contributes to the difficulty of chemistry is its reliance on mathematical calculations. Chemistry involves working with equations, balancing chemical reactions, calculating molar masses, and solving problems using various mathematical formulas.
Is chemistry exam hard? ›
In conclusion, AP Chemistry is undoubtedly challenging, but its difficulty is not insurmountable. It is a course that demands both a deep understanding of complex scientific concepts and the ability to apply mathematical principles effectively.
Is general chemistry a lot of math? ›
Also like many of the sciences, chemistry has a bit of math. This set of readings and exercises will help prepare you for future chemistry courses. Some of the mathematical features of chemistry include exponents, scientific notation, orders of operation, algebra, unit conversion, and dimensional analysis.
What is the most failed course in college? ›
Most Failed College Classes?
- Organic Chemistry — This course is known for its breadth and depth, and for requiring students to learn complex concepts at a fast pace and apply them to problem-solving. ...
- Physics — Calculus-based Physics can be tough due to the heavy application of mathematics and abstract concepts.
There are a few reasons college chemistry is difficult: It moves a lot faster than in high school chemistry and goes into greater depth. If you're not careful you'll quickly fall behind. You aren't going to be able to pass by memorization alone—you have to learn to solve problems.
What is the hardest chemistry class ever? ›
Known for its complex concepts and demanding workload, organic chemistry is often considered one of the most difficult college classes.
Which chemistry class is the easiest? ›
Although chemistry is generally considered a complex science, Analytical chemistry is one of its easiest branches.
They can be stressful and difficult classes for students who struggle in that subject. However, biology is an easier subject to learn than chemistry. The strongest supporting evidence for that claim is the relatability between biology and our everyday lives. The course content of biology is all around us.
Is chemistry harder than math? ›
Yes, Chemistry A-Level is harder than Maths based on the percentage of students who gained an A*. First, what percentage of A-Level students achieved A*s and As in Maths? The table below reveals that around 22.8% received an A*, and 24.3% got an A.
Which is harder, chemistry or calculus? ›
But for what it's worth, I found calculus to be much easier than chemistry. Calculus involves a small handful of ideas that find applications in enormous giant-hand-handfuls of situations. But if you know those small handful of ideas, the applicatio…
What is the hardest part of general chemistry? ›
Understanding quantum mechanics
It is often considered the most difficult part of chemistry due to its abstract nature and the complex mathematical calculations involved. Understanding quantum mechanics is a branch of physics that deals with the behavior of matter and energy at the atomic and subatomic level.
Is it possible to pass chemistry? ›
Passing a general chemistry class requires a good understanding of the fundamentals, the ability to do some basic math, use a calculator for more advanced equations, and a willingness to gain knowledge of a complex topic.
How to get A+ in chemistry? ›
How to get an A+ in chemistry
- Get a grip on the basics.
- Use anki + quizlet.
- Do practice questions.
- Understand why.
- Revise core practicals.
Study chemistry for at least one hour of every day of the week that ends in -day. An hour every day is much better than ten hours on Saturday alone. Start studying early (i.e., the first day of the semester). Seek help early (i.e., as soon as the question occurs, not a week later.)
