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General chemistry (sometimes called "gen chem" for short) is a course often taught at the high school and introductory university level. It is intended to serve as a broad introduction to a variety of concepts in chemistry and is widely taught. At the university level, it is also sometimes used as a weed out course for disciplines (sometimes related, sometimes not) which are perceived to require a high level of intellectual rigor or large course loads. It is also one of the few chemistry courses in most universities that does not explicitly explore a particular discipline such as organic chemistry or analytical chemistry.
General chemistry courses typically introduce concepts such as stoichiometry, prediction of reaction products, thermodynamics, nuclear chemistry, electrochemistry, chemical kinetics, and many of the rudiments of physical chemistry. Though the list of subjects covered is typically broad, leading some to criticize both the class and the discipline as encouraging memorization, most general chemistry courses are firmly grounded in several fundamental physical rules for which the primary challenge is understanding when the rules are applicable.
- Conservation of energy
- Conservation of mass
- Law of constant composition
- Gas laws
- Nuclear chemistry
- Acid-base chemistry
- Chemical bonding
- Chemical kinetics
- Chemical equilibria
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Answers:"A mole of a substance is the mass of a substance that has the same number of particles as there are atoms in 12g of carbon 12" Im doing AS chemistry and I was also confused with the definition. I asked my teacher and he said just think of it as the mass of any substance that has the same number of atoms relative to a scale where 12g of carbon is 12. You can write down Avogadro's number, but he said it wasn't necessary unless it specifies. Hope this makes things clearer.
Answers:It's basically the energy you need in order to do the reaction. The reason why there is this "hump" is that in between the reactant and product is a very unstable transition state. The energy of this transition state is represented by the activation energy. So while the product may be more stable than the reactant, the transition state must be created first and the energy needed to do that is the activation energy.
Answers:A force that produces light and heat I don't know if that's an accurate definition, just thought of it off the top of my head
Answers:1. Because only specific bright line spectra are emitted which suggests that there are only specific levels that the atom can occupy. If it could occupy any energy level then the spectra would be continuous. N1 has only the 1s orbit N2 has the 2s orbit and the 2p orbits, px py pz The lines are a result of energy released as electron falls from 1 orbit to the next.