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Unit 3
... • A redox reaction is one in which both oxidation and reduction are occurring. Zn(s) + Cu2+(aq) Zn2+(aq) + Cu(s) ...
... • A redox reaction is one in which both oxidation and reduction are occurring. Zn(s) + Cu2+(aq) Zn2+(aq) + Cu(s) ...
Gateway Chemistry Review (Answer Key) Structure and Properties
... o Contains particles which are negatively charged o Electrons are located at specific energy levels. o If the atom is neutral, the number of electrons equals the number of protons ...
... o Contains particles which are negatively charged o Electrons are located at specific energy levels. o If the atom is neutral, the number of electrons equals the number of protons ...
Chemistry 1st Semester Practice Exam
... expect to be ionic? A. H2O B. CO2 51. Which group of elements is most likely to form ions by losing one electron? ...
... expect to be ionic? A. H2O B. CO2 51. Which group of elements is most likely to form ions by losing one electron? ...
Practice Exam #2
... A) The system loses heat and has work done on it by the surroundings. B) The system loses heat and does work on the surroundings. C) The system gains heat and does work on the surroundings. D) The system gains heat and has work done on it by the surroundings. E) None of the above is correct. ...
... A) The system loses heat and has work done on it by the surroundings. B) The system loses heat and does work on the surroundings. C) The system gains heat and does work on the surroundings. D) The system gains heat and has work done on it by the surroundings. E) None of the above is correct. ...
Unit 2: Chemical Reactions
... • A chemical formula is an abbreviation for a chemical compound using chemical symbols and numbers. • The subscript number tells how many atoms of the element are present in the compound • Example: CO2 = Carbon Dioxide – Di = 2 – 1 Carbon atom and 2 oxygen atoms ...
... • A chemical formula is an abbreviation for a chemical compound using chemical symbols and numbers. • The subscript number tells how many atoms of the element are present in the compound • Example: CO2 = Carbon Dioxide – Di = 2 – 1 Carbon atom and 2 oxygen atoms ...
SOME BASIC CHEMICAL TERMS
... encounter. Matter, the material of which the universe is composed, may be defined as anything that occupies space and has mass. Most of the materials we encounter in our daily lives, such as air, milk, and steel, are mixtures. Mixtures contain two or more substances that can be physically separated ...
... encounter. Matter, the material of which the universe is composed, may be defined as anything that occupies space and has mass. Most of the materials we encounter in our daily lives, such as air, milk, and steel, are mixtures. Mixtures contain two or more substances that can be physically separated ...
Science Olympiad
... ______ 5. In the lanthanide elements, which orbitals are only partially filled? (A) 5s and 4d (B) 5d and 4f (C) 6s and 5d (D) 6p and 5f (E) 4f only ______ 6. Ions with the electronic structure 1s2 2s2 2p6 3s2 3p6 would not be present in which aqueous solution? (A) NaF(aq) (B) NaCl(aq) (C) KBr(aq) ( ...
... ______ 5. In the lanthanide elements, which orbitals are only partially filled? (A) 5s and 4d (B) 5d and 4f (C) 6s and 5d (D) 6p and 5f (E) 4f only ______ 6. Ions with the electronic structure 1s2 2s2 2p6 3s2 3p6 would not be present in which aqueous solution? (A) NaF(aq) (B) NaCl(aq) (C) KBr(aq) ( ...
Matter—anything that has mass and occupies space Weight—pull of
... • Unsaturated fatty acids – One or more double bonds between C atoms •Reduced number of H atoms ...
... • Unsaturated fatty acids – One or more double bonds between C atoms •Reduced number of H atoms ...
Chemistry Midterm Review Study Guide 2012
... 2. Identify each example as a physical property or a chemical property. a. sodium chloride is a solid physical b. water’s boiling point is 100°C physical c. ammonia is very soluble in cold water physical d. sodium reacts violently with water chemical 3. What is the difference between extensive and i ...
... 2. Identify each example as a physical property or a chemical property. a. sodium chloride is a solid physical b. water’s boiling point is 100°C physical c. ammonia is very soluble in cold water physical d. sodium reacts violently with water chemical 3. What is the difference between extensive and i ...
Year 9 Chemical Sciences Program Term 3 Course 2 2017
... describing observed reactions using word equations considering the role of energy in chemical reactions recognising that the conservation of mass in a chemical reaction can be demonstrated by simple chemical equations ...
... describing observed reactions using word equations considering the role of energy in chemical reactions recognising that the conservation of mass in a chemical reaction can be demonstrated by simple chemical equations ...
Chemical Synthesis (sat6)
... E = (M gO ∧ H2 → M g ∧ H2 O) ∧ (C ∧ O2 → CO2 )∧ (CO2 ∧ H2 O → H2 CO3 ) ∧ M gO ∧ H2 ∧ O2 ∧ C F = H2 CO3 The complete model code in LPL for this model is as follows (see [1]): Listing 1: The Model ...
... E = (M gO ∧ H2 → M g ∧ H2 O) ∧ (C ∧ O2 → CO2 )∧ (CO2 ∧ H2 O → H2 CO3 ) ∧ M gO ∧ H2 ∧ O2 ∧ C F = H2 CO3 The complete model code in LPL for this model is as follows (see [1]): Listing 1: The Model ...
Atomic Structure Study Guide
... Word Bank: John Dalton, mass, Definite, evidence, elements, conserved, proportions, multiple, laws, ancient Greece, atoms Part II. Dalton’s Principles - Dalton’s atomic theory can be summarized as five principles. (1) All matter is composed of extremely small, indivisible particles called ______, wh ...
... Word Bank: John Dalton, mass, Definite, evidence, elements, conserved, proportions, multiple, laws, ancient Greece, atoms Part II. Dalton’s Principles - Dalton’s atomic theory can be summarized as five principles. (1) All matter is composed of extremely small, indivisible particles called ______, wh ...
Final Exam Chemistry B2A Mr. Kimball`s Class 2003
... summarized by the overall equation given below. Alum is a useful agent in water-proofing and hydrogen gas is a very useful fuel. An aluminum soda pop can with a mass of 19.56 g reacted with an excess of potassium hydroxide. What is the volume at STP of the hydrogen gas produced? 2 Al (s) + 2 KOH (s) ...
... summarized by the overall equation given below. Alum is a useful agent in water-proofing and hydrogen gas is a very useful fuel. An aluminum soda pop can with a mass of 19.56 g reacted with an excess of potassium hydroxide. What is the volume at STP of the hydrogen gas produced? 2 Al (s) + 2 KOH (s) ...
Types of Reactions and Solution Chemistry
... Magnesium is a neutral element/atom. O2 is also a neutral molecule. But when these two neutral species come together in a chemical reaction, they form an ionic compound. On the product side, we have formed a charged Mg+2 ion which is attracted to the O-2 ion. This means that Mg metal as the reactant ...
... Magnesium is a neutral element/atom. O2 is also a neutral molecule. But when these two neutral species come together in a chemical reaction, they form an ionic compound. On the product side, we have formed a charged Mg+2 ion which is attracted to the O-2 ion. This means that Mg metal as the reactant ...
Chap. 4 - Chemical Reactions
... molecular equation for the reaction. Although this equation shows the reactants and products of the reaction, it does not give a very clear picture of what truly occurs in solution. In fact, such an aqueous solution actually contains individual IONS, not molecules, in solution. By looking at the afo ...
... molecular equation for the reaction. Although this equation shows the reactants and products of the reaction, it does not give a very clear picture of what truly occurs in solution. In fact, such an aqueous solution actually contains individual IONS, not molecules, in solution. By looking at the afo ...
Slide 1
... H2O aqua The oxidation number of a metal that exhibits variable oxidation states is designated by a Roman numeral in parentheses following the name of the complex ion or molecule. If a complex is an anion, the suffix "ate" ends the name. No suffix is used in the case of a neutral or cationic compl ...
... H2O aqua The oxidation number of a metal that exhibits variable oxidation states is designated by a Roman numeral in parentheses following the name of the complex ion or molecule. If a complex is an anion, the suffix "ate" ends the name. No suffix is used in the case of a neutral or cationic compl ...
Predicting Products online assistance #3
... 3. single replacement - an element replaces another in a compound. 4. double replacement - the elements in two compounds switch partners to form two new compounds. Writing Balanced Equations A chemical reaction is the process by which one or more substances are changed into one or more different sub ...
... 3. single replacement - an element replaces another in a compound. 4. double replacement - the elements in two compounds switch partners to form two new compounds. Writing Balanced Equations A chemical reaction is the process by which one or more substances are changed into one or more different sub ...
Chemical Reactions
... There are many kinds of chemical reactions and several ways to classify them. One useful method of classifies reactions into four major types. These are: 1.) synthesis; 2.) decomposition; 3.) single replacement; and 4.) double replacement reactions. Not all reactions can be put into one of these cat ...
... There are many kinds of chemical reactions and several ways to classify them. One useful method of classifies reactions into four major types. These are: 1.) synthesis; 2.) decomposition; 3.) single replacement; and 4.) double replacement reactions. Not all reactions can be put into one of these cat ...
Revision topic 1-3
... transition metal ions have a high charge density. They attract species that are rich in electrons: ligands. A ligand is a molecule or negative ion that donates a pair of electrons to a central metal ion to form a dative (or coordinat) covalent bond, e.g. H2O, NH3, Cl-, CN- ...
... transition metal ions have a high charge density. They attract species that are rich in electrons: ligands. A ligand is a molecule or negative ion that donates a pair of electrons to a central metal ion to form a dative (or coordinat) covalent bond, e.g. H2O, NH3, Cl-, CN- ...
Redox
![](https://commons.wikimedia.org/wiki/Special:FilePath/NaF.gif?width=300)
Redox reactions include all chemical reactions in which atoms have their oxidation state changed; in general, redox reactions involve the transfer of electrons between species. The term ""redox"" comes from two concepts involved with electron transfer: reduction and oxidation. It can be explained in simple terms: Oxidation is the loss of electrons or an increase in oxidation state by a molecule, atom, or ion. Reduction is the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.Although oxidation reactions are commonly associated with the formation of oxides from oxygen molecules, these are only specific examples of a more general concept of reactions involving electron transfer.Redox reactions, or oxidation-reduction reactions, have a number of similarities to acid–base reactions. Like acid–base reactions, redox reactions are a matched set, that is, there cannot be an oxidation reaction without a reduction reaction happening simultaneously. The oxidation alone and the reduction alone are each called a half-reaction, because two half-reactions always occur together to form a whole reaction. When writing half-reactions, the gained or lost electrons are typically included explicitly in order that the half-reaction be balanced with respect to electric charge.Though sufficient for many purposes, these descriptions are not precisely correct. Oxidation and reduction properly refer to a change in oxidation state — the actual transfer of electrons may never occur. The oxidation state of an atom is the fictitious charge that an atom would have if all bonds between atoms of different elements were 100% ionic. Thus, oxidation is better defined as an increase in oxidation state, and reduction as a decrease in oxidation state. In practice, the transfer of electrons will always cause a change in oxidation state, but there are many reactions that are classed as ""redox"" even though no electron transfer occurs (such as those involving covalent bonds).There are simple redox processes, such as the oxidation of carbon to yield carbon dioxide (CO2) or the reduction of carbon by hydrogen to yield methane (CH4), and more complex processes such as the oxidation of glucose (C6H12O6) in the human body through a series of complex electron transfer processes.