Essential Chemistry Textbook

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Thisrigorous yet accessible textbook includes core Chemistry topics that cover a complete year of instruction.The lessons follow the 5E model and include tools for ELL students, as well as tools for students with differentlearning styles. And the curriculum aligns to your standards for both regular and advanced coursework.

The accessible textbook includes one main idea per page, quality illustrations, 71 complete investigations, four EngineeringDesign Projects, and Section and Chapter Reviews. The 24 chapters cover these topics:

The Essential Chemistry e-Book is a fully digital version of the Student Textbook that can be accessed from any web browser. Throughout the text, interactive elements bring concepts to life, engaging students with a combination of simulations and molecular models. This innovative text also features:

The Essential Chemistry curriculum also includes digital access to the PASCO Academy, which provides teachers with a wealth of ready-to-use resources for chemistry instruction. These robust resources include:

This equipment kit will outfit a single chemistry lab station of 2-5 students. When used inconjunction with the Essential Chemistry program, including the e-Book and lab manual,it creates a complete solution for teaching high school chemistry. It can also be used to supplementyour existing textbook, serving as the lab component of your curriculum. This use is supported bythe more than 70 standards-based Essential Chemistry labs that are available for free downloadin the PASCO DIgital Library.

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Within every living organism, countless reactions occur every second. These reactions typically occur more rapidly and with greater efficiency than would be possible under the same conditions in the chemical laboratory, and while using only the subset of elements that are readily available in nature. Despite these apparent differences between life and the laboratory, biological reactions are governed by the same rules as any other chemical reaction. Thus, a firm understanding of the fundamentals of chemistry is invaluable in biochemistry. There are entire textbooks devoted to the application of chemical principles in biological systems and so it is not possible to cover all of the relevant topics in depth in this short article. The aim is instead to provide a brief overview of those areas in chemistry that are most relevant to biochemistry. We summarize the basic principles, give examples of how these principles are applied in biological systems and suggest further reading on individual topics.

For that reason, I decided to go ahead and explain here 15 important basic chemistry concepts, which hopefully will get you in a better shape for learning chemistry. These are clearly explained in most of the chemistry textbooks in our review.

We will start off with an introduction to basic chemistry: background on the most basic definitions of chemistry, a bit of history, and highlighting why and how chemistry is important. The basic units in chemistry will be defined: atoms, molecules, subatomic particles. Then, we will discuss them from a beginner point of view, and formulate them in the format of questions.

Disclaimer: This is not intended to be a comprehensive description of each concept, but rather an introduction to each of them: chemistry basics for beginners. We cite and include sources that we consider useful for expanding them further.

Very simple chemical processes were performed even during ancient history, at 1000 BC, much before any basic chemistry concepts or laws were actually established. Extraction of metals from ore or getting compounds out of natural sources such as plants, are examples of chemistry that was first performed thousands of years ago and are still a thing today.

Alchemytried to explain the nature, properties and transformations of matter. But itwas not science, but rather a set of myths and magic. It is agreed upon that,the transition from alchemy to modern chemistry as we know it, started on the17th century, with the publication of The Sceptical Chymist by Robert Boyle (1661), who isconsidered the father of modern chemistry. The difference between chemistry andalchemy is the application of the scientific method.

Everythingis chemistry. Everything that you can observe macroscopically is made ofchemicals. You are made of chemicals, your food is chemicals, you breathechemicals, we live out of and thanks to chemicals, everything you see under thesun is a mixture of chemicals.

A all sciences are glued together by basic chemistry concepts, thats why it is called the central science. Without chemistry, physical sciences (which include chemistry itself), would find a gap and not be bound to life sciences (such as biology) and applied sciences (such as engineering). This is important to note in any introduction to chemistry text.

Chemistryis the science that studies and manipulates matter. We human beings are gettingpretty good at it, (although it is not easy to beatNature), but we arefar from an ideal position in which we can easily make any molecule or compoundat will in a matter of minutes.

That isprobably the future of chemical synthesis, being able to shape any compound atwill in a matter of minutes, without relying on long term challenging synthesis projects. Furthermore, the possibilities ofsynthetic chemistry are literally endless: there will always be room for makinga chemical even better, or finding a molecule that works even better for agiven task.

Obviouslywe now know that atoms are made of smaller particles, called subatomicparticles: protons (positively charged by convention), electrons (negativelycharged by convention) and neutrons (neutral particles).

In simpleterms: Protons and neutrons make up the inner part of the atom, or nucleus, andaccount for most of the mass of the atoms. Electrons make up a cloud (orbitals,or areas in which the probability of finding an electron is high) around thenucleus.

Furtherdefinitions include, that they are the simplest fundamental unit that can takepart in a chemical reaction, and that they are electrically neutral. Thislatter point distinguishes molecules from ions, another type of chemicalcompound.

There are three basic types of chemical compounds, and should be briefly introduced in this post about basic chemistry concepts. All of them are the result of bonding atoms together. The difference is in the nature of the forces that hold together those atoms.

Chemistrystudies changes in matter. A chemicalreaction is a process in which one set of chemical compounds aretransformed into another. Reaction occur when there is an interaction betweenthe compounds in which some initial bonds are broken and some new bonds areformed.

Why does this happen? In simple terms, because the energy holding the new bonds together is higher than the energy that held the initial bonds. This is the definition of a thermodynamically favored process. Favorable thermodynamics is the most fundamental step that leads two compounds to react with each other. Other drastically important factor is reaction kinetics.

Chirality is a geometric property of certain molecules. A molecule is said to be chiral when its mirror image is not superimposable to the molecule itself. The classical source of chirality in a (organic) compound is the presence of a carbon atom with four different substituents. The concept is far better explained by this basic chemistry youtube video:

The origin of chirality, together with the origin of life is one of the most relevant questions in, not only chemistry, but science in general, so it is not possible to answer in a straightforward manner. The main theory backing it up is based on homochirality, which could have emerged over three steps: mirror-symmetry breaking, chiral amplification and chiral transmission. This is far beyond basic chemistry concepts, but you can further read about it here.

Whereas the Arrhenius acid-base model is very illustrative, it has its limitations, and other models are used to describe more advanced acid-base theories. The most important ones are the Brnsted-Lowry theory (which is a more general version of the Arrhenius theory), and the Lewis theory.

Accordingto the Lewis theory, an acid is asubstance that accepts a lone pair of electrons, and a base is a substance thatdonates a lone pair of electrons. This accounts for acid-base equilibria whichcannot be explained by Arrhenius or Brnsted-Lowry theories, such as thebasicity of ammonia in water:

Stoichiometry is a very basic chemistry concept. It is just a way of measuring or determining the amount of each substance that is involved in a reaction (reactants), and the amount of products that are generated.

So if we were to perform this (rather inpractical, using two expensive, difficult to handle gases, to get a cheap easy to find product such as water) reaction in a lab, we would have to mix together 2 moles of hydrogen per mole of oxygen. This means using 2 equivalents (equiv) of hydrogen respect to the amount of oxygen. In this case, while handling gases, the number of moles of each can be controlled by establishing a partial pressure for each of them.

In case of more common solid reagents, we can consider a hypotetical synthesis of sodium carbionate from carbonic acid. We need 2 equivalents of sodium hydride (NaH) per mole of carbonic acid employed (twice as many molecules of NaH than molecules of carbonic acid).

Redox processes are a type of chemical reaction inwhich one of the reacting compounds gets oxidized and the other gets reduced. Aredox reaction involves a transfer of electrons. We say that a compound, oratom within a compound, gets oxidized when it loses electrons and the other component gets reduced when it gains electrons.

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