By Peter J. Mikulecky, Katherine Brutlag, Michelle Rose Gilman, Brian Peterson
From drinks and solids to acids and bases - paintings chemistry equations and use formulation with ease
Got a grab at the chemistry phrases and ideas you must recognize, yet wander away midway via an issue or, worse but, no longer recognize the place to start? haven't any worry - this hands-on consultant is helping you resolve many varieties of chemistry difficulties in a targeted, step by step demeanour. With problem-solving shortcuts and plenty of perform workouts, you'll construct your chemistry abilities and increase your functionality either out and in of the technology lab. You'll see find out how to paintings with numbers, atoms, and parts; make and remake compounds; comprehend alterations when it comes to power; make experience of natural chemistry; and more!
100s of Problems!* recognize the place to start and the way to unravel the commonest chemistry difficulties* step by step resolution units truly determine the place you went improper (or correct) with an issue* comprehend the major exceptions to chemistry ideas* Use chemistry in sensible purposes with confidence
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Extra resources for Chemistry Workbook For Dummies
Pressure (an example is of gaseous reactants): Pressure units are derived using the formula, Pressure = Force / Area. The SI units for force and area are Newtons (N) and square meters (m2), so the SI unit of pressure, the Pascal (Pa), can be expressed as N m-2. 23 24 Part I: Getting Cozy with Numbers, Atoms, and Elements Q. 3. A physicist measures the density of a substance to be 20 kg/m3. His chemist colleague, appalled with the excessively large units, decides to change the units of the measurement to the more familiar g/cm3.
On the contrary, chemistry often deals in quantities. These kinds of quantities are expressed with derived units, which are built from combinations of base units. ߜ Area (for example, catalytic surface): Area = Length × Width and has units of length squared (meter2, for example). ߜ Volume (of a reaction vessel, for example): You calculate volume by using the familiar formula: Volume = Length × Width × Height. Because length, width, and height are all length units, you end up with length × length × length, or a length cubed (for example, meter3).
All three of these phases of matter have very specific comfort zones where they’re most likely to exist, and by the end of this chapter, you’ll be able to predict likely phases based on temperature and pressure. Building Atoms from Subatomic Particles For now, picture an atom as a microscopic Lego. Atoms come in a variety of shapes and sizes, and you can build larger structures out of them. Like a Lego, an atom is extremely hard to break. In fact, so much energy is stored inside atoms that breaking them in half results in a nuclear explosion.
Chemistry Workbook For Dummies by Peter J. Mikulecky, Katherine Brutlag, Michelle Rose Gilman, Brian Peterson