Properties of water

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Physical sciences

Natural sciences

Equilibrium chemistry

PH

Acid

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.

Campbell Biology Chapter 3

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Inorganic solvents

Chemical properties

Equilibrium chemistry

? 2017 Pearson Education, Inc. Lecture Presentations byNicole Tunbridge and Kathleen Fitzpatrick Chapter 3Water and Life The Molecule That Supports All of Life Water makes life possible on Earth Water is the only common substance to exist in the natural environment in all three physical states of matter Water?s unique emergent properties help make Earth suitable for life The structure of the water molecule allows it to interact with other molecules ? 2017 Pearson Education, Inc. Concept 3.1: Polar covalent bonds in water molecules result in hydrogen bonding In the water molecule, the electrons of the polar covalent bonds spend more time near the oxygen than the hydrogen The water molecule is thus a polar molecule:The overall charge is unevenly distributed

molar mass intermolecular forces boiling key

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Physics

Gases

Dipole

Boiling

Name ?________________________________________ ? ? ? ?Pd ?___ ? ? ? ? ?Date ?___________________ ? Molar ?Mass, ?Intermolecular ?Forces ?& ?Boiling ?Points ?Worksheet ?Answers Objectives ?? Calculate ?the ?molar ?masses ?of ?several ?compounds. ?? Investigate ?how ?molar ?mass ?and ?intermolecular ?forces ?affect ?a ?compound?s ?boiling ?point. ?? Determine ?the ?relative ?strength ?of ?the ?four ?intermolecular ?forces ?(IMFs) ? 1. Complete ?the ?table ?below ?by ?calculating ?the ?molar ?mass ?for ?each ?compound ?to ?the ?nearest ?tenth ?of ?a ?gram. ?

molar mass intermolecular forces boiling points graph project

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Physics

Dipole

Name ?________________________________________ ? ? ? ?Pd ?___ ? ? ? ? ?Date ?___________________ ?Molar ?Mass, ?Intermolecular ?Forces ?& ?Boiling ?Points ?Worksheet ?Objectives ?? Calculate ?the ?molar ?masses ?of ?several ?compounds. ?? Investigate ?how ?molar ?mass ?and ?intermolecular ?forces ?affect ?a ?compound?s ?boiling ?point. ?? Determine ?the ?relative ?strength ?of ?the ?four ?intermolecular ?forces ?(IMFs) ? 1. Complete ?the ?table ?below ?by ?calculating ?the ?molar ?mass ?for ?each ?compound ?to ?the ?nearest ?tenth ?of ?a ?gram. ?

lab polar or nonpolar using boiling points

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AP CHEM LAB: CHEMICAL BONDING ? POLAR OR NONPOLAR THEORY: ?Two atoms held together by the mutual attraction of each nucleus to valence shell electrons are said to be chemically bonded. The chemical bond can be represented by the overlap of the electron probability density map of an atomic orbital from each atom to form a molecular orbital capable of containing two electrons. Or said in English, a covalent bond can form. These electrons are shared between the respective atoms. However, the degree of sharing is not necessarily equal. The electronegativity of each atom can be used to approximate its attraction for the electrons and therefore the probability of finding the electrons closer to that nuclei.

water biofact sheet

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The Biological Importance of Water B io F actsheet September 1998 Number 30 1 Water is a polar molecule i.e. it has both positively charged and negatively charged areas. Water is made up of two positively charged hydrogen atoms and one negatively charged oxygen atom (Fig 1). Water (H2O) is the most abundant molecule in cells, whole organisms and on earth. This is a consequence of the unique physical and chemical properties of water. This Factsheet will briefly explain the significance of these physical and chemical properties, then discuss the primary roles of water in animals and plants. As a result of this polarity (the uneven distribution of charges), adjacent water molecules are attracted to and become bonded to each other. The

Ap Bio chap2_3 ppt

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Chemical bonding

Chemical properties

Valence

The Chemistry of Life Why are we studying chemistry? Chemistry is the foundation of Biology Proton Neutron Electron Hydrogen 1 proton 1 electron Oxygen 8 protons 8 neutrons 8 electrons + 0 ? Everything is made of matter Matter is made of atoms The World of Elements C Different kinds of atoms = elements H O N P S Na K Mg Ca Life requires ~25 chemical elements About 25 elements are essential for life Four elements make up 96% of living matter: ? carbon (C) ? hydrogen (H) ? oxygen (O) ? nitrogen (N) Four elements make up most of remaining 4%: ? phosphorus (P) ? calcium (Ca) ? sulfur (S) ? potassium (K) Effect of electrons electrons determine chemical behavior of atom depends on number of electrons in atom?s outermost shell valence shell Bonding properties

Campbell Biology 9th Edition - Ch. 3 Water

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Atmospheric thermodynamics

Matter

Water is Special Polarity There are two types of covalent bonds, polar and nonpolar While nonpolar molecules share electrons equally, polar molecules do not. This results in one part of the molecule being partially positive and another part being partially negative. 2 Student Misconceptions and Concerns

AP Biology - What makes up life

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Condensation reaction

Monomer

Macromolecule

Hydrolysis

Properties of water

All living things are made up of four classes of large biological molecules: Carbohydrates Lipids Proteins nucleic acids Macromolecules are large molecules composed of thousands of covalently connected atoms Molecular structure and function are inseparable A polymer is a long molecule consisting of many similar building blocks These small building-block molecules are called monomers Three of the four classes of life?s organic molecules are polymers: Carbohydrates Proteins Nucleic acids A condensation reaction or more specifically a dehydration reaction occurs when two monomers bond together through the loss of a water molecule Enzymes are macromolecules that speed up the dehydration process

AP Bio Chapter 3 notes

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Chemical bonding

Inorganic solvents

Oxygen

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