Oxides

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Bases

PH

Chapter?3 Water?and?the?Fitness?of?the?Environment Multiple-Choice?Questions 1) In?a?single?molecule?of?water,?two?hydrogen?atoms?are?bonded?to?a?single?oxygen?atom?by A) hydrogen?bonds. B) nonpolar?covalent?bonds. C) polar?covalent?bonds. D) ionic?bonds. E) van?der?Waals?interactions. Answer: C Topic: Concept?3.1 Skill: Knowledge/Comprehension 2) The?slight?negative?charge?at?one?end?of?one?water?molecule?is?attracted?to?the?slight?positive?charge?of?another water?molecule.?What?is?this?attraction?called? A) a?covalent?bond B) a?hydrogen?bond C) an?ionic?bond D) a?hydrophilic?bond E) a?hydrophobic?bond Answer: B Topic: Concept?3.1 Skill: Knowledge/Comprehension 3) An?example?of?a?hydrogen?bond?is?the?bond?between A) C?and?H?in?methane?(CH4).

properties of water

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intermolecular forces

PH

1 Name _______________________________ Date _________________ Period _________ Extraordinary properties of Water ppt Questions 1. What is the formula for a molecule of water? 2. Which atom in water attracts more negative electrons? 3. Water is a ________________ molecule because it has an equal number of ________________ and ___________________. 4. What is water?s net charge? 5. Water is called a _______________ molecule because the oxygen end ?acts? _____________ charged and the hydrogen end ?acts? _______________ charged. 6. One hydrogen bond is ____________, but many hydrogen bonds are ____________. 7. How do hydrogen bonds form? PROPERTIES OF WATER 8. At sea level, water boils at _______________ and freezes at ____________.

intro to biochemistry and water worksheet

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Oxygen

1 Name: _____________________________ Date: ______________________________ 1. Because oxygen atoms tend to attract positively charged atoms, organic compounds that contain oxygen atoms tend to form ________________ bonds. 2. In the molecule that has the chemical formula C2H4, the carbon atoms are bonded together with a _________________________ bond. 3. What are the three types of bonds? _________________, ______________________, ___________________ 4. A substance that tends not to react with water, "Water hating" , is ________________________ 5. Breaking of _______________ bonds is the first thing that happens when water is heated, which means that it takes a

water

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Supramolecular chemistry

Micelle

1 LECTURE 2: Water Hydrogen oxide Dihydrogen monoxide Hydrogen hydroxide Course outline - Water ? Structure of water ? Solvent Properties ? pH properties ? Temp. Regulation ? Heat capacity ? Heat of fusion ? Heat of vapourization ? Surface Tension ? Capillarity BL10J HALL 2006 2 Objectives ? At the end of this lesson you should be able to: ? Describe the structure of the water molecule ? Describe how water molecules are affected by ? pH, Temperature, Surface tension, Capillarity ? Explain the properties of water that make it an effective solvent. BL10J HALL 2006 3 BL10J HALL 2006 4 Water ? Abundant on earth. ? Covers 3/4 of the earth?s surface ? 70% of our body weight. ? Makes life possible.

Campbell Biology Chapter 3 Study Guide

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Bases

Acid-base chemistry

Properties of water

Hydronium

PH

Hydrogen bond

Acid

Name Period Chapter 3: Water and Life Concept 3.1 Polar covalent bonds in water result in hydrogen bonding Study the water molecules at the right. On the central molecule, label oxygen (O) and hydrogen (H). What is a polar molecule? Why is water considered polar? Now, add + and - signs to indicate the charged regions of each molecule. Then, indicate the hydrogen bonds. Explain hydrogen bonding. How many hydrogen bonds can a single water molecule form? Concept 3.2 Four emergent properties of water contribute to Earth?s suitability for life Hydrogen bonding accounts for the unique properties of water. Let?s look at several. Cohesion, Adhesion, and Surface Tension Distinguish between cohesion and adhesion.

AP BIO

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Chapters 1, 2, &3. AP Biology Summarize Themes connect the concepts of biology Evolution is the core thing Accounts for the unity and diversity of life Charles Darwin and Theory of natural selection Taxonomy > classification of organisms Domains: Bacteria, Archaea, and Eukarya 6 Kingdoms: Plant, Animal, Fungi, Protista, Bacteria, Archaebacteria New properties emerge at each level in the biological hierarchy O>P>C>E>B Atom > Molecule > Organelle > Cell > Tissue > Organ > Organ System > O Organisms interact with their environments, exchanging matter and energy Energy > Producers > Consumers Structure and Function are correlated at all levels of biological organization Form Suits function Cells are an organism?s basic units of function Prokaryotes vs. Eukaryotes

Campbell Biology Test Bank Chapter 3

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Bases

Acid-base chemistry

PH

Properties of water

Hydroxide

Acid

Chemical reaction

Campbell's Biology, 9e (Reece et al.) Chapter 3 Water and Life Life evolved in the ocean, and the chemistry of life occurs in an aqueous environment. These questions explore the properties of water that are important to sustain life?s chemical processes, organismal physiology, and interactions of organisms with their environment. Quantitative properties such as heat content, molarity, and pH are also addressed. A few questions address how human activities affect the global environment through acid rain and acidification of the ocean. Multiple-Choice Questions 1) In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by A) hydrogen bonds. B) nonpolar covalent bonds. C) polar covalent bonds. D) ionic bonds. E) van der Waals interactions.

APES MIDTERM 2007

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Environmental Science

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Millennium Development Goals

matter

Environment

Ozone

NOx

APES

environmental science

Practice Test APES Spring Midterm 2007 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Which of the following does not apply to sea otters? a. They have blubber to keep them warm. b. They can eat 25 % of their weight per day in sea urchins and other benthic organisms. c. They use tools. d. They have the thickest fur of any mammal. ____ 2. The most common pattern of population dispersion found in nature is a. random. b. uniform. c. clumped. d. dispersed. ____ 3. Biotic potential is determined by a. reproductive age span. b. the minimum viable population. c. how many offspring die before reproducing. d. irruptive populations.

APES MIDTERM 2007

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Environmental Science

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Millennium Development Goals

matter

Environment

Ozone

NOx

midterm

APES

environmental science

Practice Test APES Spring Midterm 2007 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Which of the following does not apply to sea otters? a. They have blubber to keep them warm. b. They can eat 25 % of their weight per day in sea urchins and other benthic organisms. c. They use tools. d. They have the thickest fur of any mammal. ____ 2. The most common pattern of population dispersion found in nature is a. random. b. uniform. c. clumped. d. dispersed. ____ 3. Biotic potential is determined by a. reproductive age span. b. the minimum viable population. c. how many offspring die before reproducing. d. irruptive populations.

chemistry

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