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Basic Chemistry Review (PreAP level)

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Chemistry
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Chemical bonding
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electron

1 THE MOST BASIC CHEMISTRY REVIEW This review is intended to remind you of the BASICS that you learned. It is NOT COMPLETE. CLASSIFYING MATTER elements, compounds, or mixtures PROPERTIES OF MATTER INTensive?a property that doesn?t depend on amount (ex- boiling point) Extensive?a property that does depend on amount (ex- mass or volume) density ? amount of matter in a given volume Density = mass volume units: g/cm3 for solids, g/mL for liquids density column Example A piece of wood that measures 3.0 cm by 6.0 cm by 4.0 cm has a mass of 80.0 grams. What is the density of the wood? Would the piece of wood float in water? If the wood were cut into three pieces would it have the same density?

AP Chemistry Zumdahl 7E Chapter 21 Notes

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Nuclear physics
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Nuclear fission

1 AP Chemistry Chapter 21 - The Nucleus: A Chemist?s View 21.1 Nuclear Stability and Radioactive Decay A. Radioactive Decay 1. Decomposition forming a different nucleus and producing one or more particles a. Total mass number and atomic number must be conserved in any nuclear change nCHeBe 101264294 +?+ B. Zone of Stability 1. Of 2000 known nuclides, only 279 are stable with respect to radioactive decay 2. All nuclides with more than 83 protons (bismuth) are unstable 3. Light nuclides are most stable when the neutron/proton ratio is 1 4. Heavier nuclides are most stable when the neutron/proton ratio is greater than 1 5. Magic numbers a. Special stability exists when the number of protons or neutrons is: 2, 8, 20, 28, 50, 82, 126 C. Types of Radioactive Decay

BIO CH 2 TEST

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Biology
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Campbell's Biology, 9e (Reece et al.) Chapter 2 The Chemical Context of Life This chapter presents basic chemical principles for understanding the chemical context of living organisms, from atomic structure to the nature of chemical bonds and an introduction to chemical equilibrium. These questions focus on elements most important to life or the study of life, including the elements that comprise organic molecules and important trace elements. Some isotopes are important in geologic dating and in biological tracer studies. How elements participate in forming different types of chemical bonds is essential to mastering subsequent topics on the behavior and properties of biological molecules, structures, and energy metabolism. Multiple-Choice Questions

ionic, covalent and hydrogen bonds

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Biology
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Assignment 2 ? Chemical Bonds In this world there are many different kinds of living organisms. All organisms are composed of atoms, that bond together to make the necessary components of a living organism. There are three identified chemical bonds that are recognized, they are ionic bonds, covalent bonds and hydrogen bonds. All bonds are not created equal, just ask the electrons!

Atomic Structure Notes

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Pre-AP Chemistry 1 Chapter ________ Name _____________________________ Period ______ I. Historical Development (3-1) x particle theory of matter first proposed by ________________________ in 400 BC ? named the basic particle the ?_______________?, which means ____________________ in Greek x by 1700?s most scientists accepted definition of an _____________ as a substance that cannot be broken down by ordinary ________________ means x also accepted that _______________ combine to form ________________ x _______________________: the transformation of a substance or substances into 1 or more

cell bi chapter 1/2

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electron
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Chapter One Characteristics of living organisms Consist of one or more cells Unicellular organisms (1) A single cell carries out all the functions of life Multicellular organisms Made of many specialized cells Consist of genetic information DNA Info molecule Passed on during cell division Composed of nucleotides Genetic code Gene Specific segment of DNA molecule Contains info to make proteins Proteins Control chemical reactions Cell/organism structure and function Use genetic information to reproduce Use genetic information for growth and development Can extract energy from the environment and use it to do biological work Can convert molecules obtained from their environment into new biological molecules Can respond to environmental changes

campbell_ap_bio_practice_test_ch2

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Chapter?2 The?Chemical?Context?of?Life Multiple-Choice?Questions 1) About?25?of?the?92?natural?elements?are?known?to?be?essential?to?life.?Which?four?of?these?25?elements?make?up approximately?96%?of?living?matter? A) carbon,?sodium,?chlorine,?nitrogen B) carbon,?sulfur,?phosphorus,?hydrogen C) oxygen,?hydrogen,?calcium,?sodium D) carbon,?hydrogen,?nitrogen,?oxygen E) carbon,?oxygen,?sulfur,?calcium Answer: D Topic: Concept?2.1 Skill: Knowledge/Comprehension 2) Trace?elements?are?those?required?by?an?organism?in?only?minute?quantities.?Which?of?the?following?is?a?trace element?that?is?required?by?humans?and?other?vertebrates? A) nitrogen B) calcium C) iodine D) sodium E) phosphorus Answer: C Topic: Concept?2.1 Skill: Knowledge/Comprehension

Chapter 6- Chemistry in Biology

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Biology
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Chapter 6-Chemistry in Biology COMPOSITION OF MATTER -Matter-everything in universe is composed of matter. -Matter is anything that occupies space or has mass -Mass-quantity of matter in an object -Weight-pull of gravity on us ELEMENTS -Pure substances that cannot be broken down chemically into simpler kinds of matter -More than 100 elements (92 naturally occuring) -90% of the mass of an organism is composed of 4 elements (oxygen, carbon, hydrogen, and nitrogen) -Each element has a unique chemical symbol -Consists of 1-2 letters -First letter is always captialized ATOMS -The simplest particle of an elemetnt that remains all the properties of that element. -Properties of atoms determine the structure and properties of the matter they compose.

Holt Biology Chapter 2 Section 1

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Unit 1 Chapter 2: Chemistry of Life Section 1: Nature of Matter Atom Smallest unit of matter that can?t be broken down by chemical means Protons, Neutrons, Electrons Electron cloud Region around nucleus that electrons can occupy at any time Stable atoms usually have no charge 1 electron for every 1 proton Elements Pure substance made of one kind of atom Differ in number of protons Ex. Carbon-12 (Carbon has 6 protons) 12-6=6 Carbon-12 has 6 neutrons Compound Substance made of joined atoms of 2 or more different elements Chemical formula identifies what is in compound and those elements? proportions Ex. NaCl 1 Sodium for every 1 Chlorine Covalent Bonds Two or more atoms share electrons to form a molecule Molecule Group of atoms held together by covalent bonds

Cambell Biology 7th edition Chemistry notes

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The Chemical Basis of Life ?We are stardust? nasa.gov Students should be able to: Define: element, atom and molecule Name the components of atoms and their physical arrangements. Draw a diagram of an atom, given the atomic number. Distinguish between the types of chemical bonds. Element: a substance that cannot be broken down to other substancesPeriodic Table: organizational chart of all the elements http://www.periodictable.com/ Table 2.1 5 Table 2.1 Elements In the Human Body ATOM: from Greek atomos, ?unable to be cut? Atomic Structure An atom is the smallest unit of matter that still retains the properties of an element. Three subatomic particles in atoms are relevant to our discussion of the properties of elements. Protons are positively charged.

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