Magnesium hydroxide mgoh 2 also known as milk of

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Magnesium hydroxide , Mg(OH) 2 , also known as milk of magnesia, a weak base used in antacids and laxatives. Images: pH scale , Edward Stevens, Wiki From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Ions & _______ Compounds that dissociate in water and produce cations other than H+ and anions other than OH- are called salts . The most familiar salt is sodium chloride , the principal component of common table salt . Other examples of salts: Baking soda (NaHCO3) Epsom Salts (MgSO4) From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Salts: The Role of ________ • Certain salts, called buffers, can combine with excess hydrogen (H+) or hydroxyl (OH-) ions. • Produce substances less acidic or alkaline. Example: Antacids like Tums are buffers made of the salt calcium carbonate (CaCo3). From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Reactions Involving Ions Remember… Ion = an atom which has lost or gained one or more electrons, so it’s negatively or positively charged. The Principle of _______ ________ is a common water softening method. From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Lets use a Branganalogy to help us Understand the Concept of Ion Exchange 1. Brad Pitt is a negatively charged resin bead 2. Jennifer Anniston is a positively charged Sodium ion 3. Angelina Jolie is a positively charged Calcium Ion Na+ Ca++ Now lets say that ‘positiveness’ equates with ‘drop-dead gorgeousness’ Negatively charged Brad is attracted to reasonably positive Jennifer. Na+ Na+ Ca++ - - - - - - - - - - - - - - - - Negatively charged Brad lets go of reasonably positive Jennifer in the presence of insanely positive Angelina. From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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_________ Bonds Covalent Bonds : Involve the sharing of a pair of electrons between two atoms. Found mainly … organic compounds Image: Methane Covalent Bonds , Dynablast, Wiki From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Oxidation - Reduction Reaction • Or Redox reaction = chemical reactions in which electrons are gained , lost ( Q: What kind of bond? ) or shared ( Q: What kind of bond? ) in a chemical reaction. ________ describes the loss of electrons by a molecule, atom or ion. _________ describes the gain of electrons by a molecule, atom or ion. From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Oil Rig Image: Oil Rig Platform , Nasa From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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_________ Bonds Hydrogen Bonds: When an atom of hydrogen is attracted to two atoms instead of only one. Hydrogen bonds attract molecules to each other, but do not technically bond atoms together . Bonding electrons are shared unequally by the hydrogen and oxygen atoms: negative charge (-) forms at ______ end positive charge (+) forms at _______end When the electrons in a covalent bond are not equally shared, the molecule is _____. Found in water, proteins & DNA Image: DNA Chemical Structure , Madprime, Wiki; Water Striders , Markus Gayda, Wiki From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Neutrons Image: Parts of Atom, Chem4Kids Website From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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What is an ________?
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