snc 2do unit: chemistry unit test review questions
... 2. Write the formulas for the following compounds. A) sulphur trioxide B) tin (IV) bromide C) iron (II) oxide D) carbon monoxide E) rubidium oxide F) nitric acid G) copper (II) sulphide H) aluminum sulphate I) silicon dioxide J) phosphorus pentachloride 3. What do the elements in the same group all ...
... 2. Write the formulas for the following compounds. A) sulphur trioxide B) tin (IV) bromide C) iron (II) oxide D) carbon monoxide E) rubidium oxide F) nitric acid G) copper (II) sulphide H) aluminum sulphate I) silicon dioxide J) phosphorus pentachloride 3. What do the elements in the same group all ...
oxidation–reduction reaction
... compound is the number of electrons lost or gained by the atom when it forms ions. • Oxidation numbers are tools that scientists use in written chemical equations to help them keep track of the movement of electrons in a redox reaction. ...
... compound is the number of electrons lost or gained by the atom when it forms ions. • Oxidation numbers are tools that scientists use in written chemical equations to help them keep track of the movement of electrons in a redox reaction. ...
OXIDATION NUMBERS
... b) Cr2O72- and Fe2+ c) H2O2 and MnO4¯ d) C2O42- and MnO4¯ e) S2O32- and I2 f) Cr2O72- and I¯ ...
... b) Cr2O72- and Fe2+ c) H2O2 and MnO4¯ d) C2O42- and MnO4¯ e) S2O32- and I2 f) Cr2O72- and I¯ ...
ionic and covalent bonds
... Octet Rule: atoms want 8 electrons in the valence (outer) energy level Ionic Bond: bond in which one or more electrons from one atom are removed and attached to another atom. This creates positive and negative ions which attract each other. (Acids, bases, salts do this): ...
... Octet Rule: atoms want 8 electrons in the valence (outer) energy level Ionic Bond: bond in which one or more electrons from one atom are removed and attached to another atom. This creates positive and negative ions which attract each other. (Acids, bases, salts do this): ...
Step 2
... number to each element wherever it appears in the equation. If the reaction is a redox reaction, identify the element that undergoes an increase in oxidation number and the elements the undergoes a decrease. Find the numerical values of the increase and decrease. Determine the smallest whole-number ...
... number to each element wherever it appears in the equation. If the reaction is a redox reaction, identify the element that undergoes an increase in oxidation number and the elements the undergoes a decrease. Find the numerical values of the increase and decrease. Determine the smallest whole-number ...
What are reactions? - UTLNET Secure Site
... boiling bubbles colour compound condensation element equation gases heat products reactants reaction reversed word ...
... boiling bubbles colour compound condensation element equation gases heat products reactants reaction reversed word ...
What are reactions?
... boiling bubbles color compound condensation element equation gases heat products reactants reaction reversed word ...
... boiling bubbles color compound condensation element equation gases heat products reactants reaction reversed word ...
1.5.16(Chem) - mrcarlsonschemistryclass
... • Atoms bonded together with an IONIC bond are called ionic compounds. • An ionic bond is a METAL bonded with a NONMETAL. • Draw the crystal lattice structure for sodium chloride: ...
... • Atoms bonded together with an IONIC bond are called ionic compounds. • An ionic bond is a METAL bonded with a NONMETAL. • Draw the crystal lattice structure for sodium chloride: ...
Chapter 4
... 2. Write the complete ionic equation by breaking up aqueous compounds (ionic) 3. Cancel spectator ions (same on both sides including state) 4. Rewrite what’s left (reduce coefficients if ...
... 2. Write the complete ionic equation by breaking up aqueous compounds (ionic) 3. Cancel spectator ions (same on both sides including state) 4. Rewrite what’s left (reduce coefficients if ...
Chapter 4 - Aqueous Reactions
... air will react with the oxygen in the air 2Ca(s) + O2(g) 2 CaO(s) Ca has been converted to an ion Ca2+ by losing two 2 electrons. Dissolve Ca in acid Ca(s) + 2H+(aq) Ca2+(aq) + H2(g) Again the Ca has lost 2 electrons — oxidation ...
... air will react with the oxygen in the air 2Ca(s) + O2(g) 2 CaO(s) Ca has been converted to an ion Ca2+ by losing two 2 electrons. Dissolve Ca in acid Ca(s) + 2H+(aq) Ca2+(aq) + H2(g) Again the Ca has lost 2 electrons — oxidation ...
(+1) + - Edublogs
... Solutions must be standardized - typically use Na2C2O4 ( a primary standard material.) Reagent slowly degrades and MnO2 must be removed No indicator is needed - excess reagent produces a pink solution. ...
... Solutions must be standardized - typically use Na2C2O4 ( a primary standard material.) Reagent slowly degrades and MnO2 must be removed No indicator is needed - excess reagent produces a pink solution. ...
Chapter 4: Chemical Reactions Elements can be characterized as
... Net ionic equations focus on what occurs in a chemical reaction in aqueous solutions Oxidation Numbers For a binary compound AX, the oxidation number is the number of electrons gained or lost by an atom of the element when it forms the compound. It is sometimes referred to as the oxidation state. Ox ...
... Net ionic equations focus on what occurs in a chemical reaction in aqueous solutions Oxidation Numbers For a binary compound AX, the oxidation number is the number of electrons gained or lost by an atom of the element when it forms the compound. It is sometimes referred to as the oxidation state. Ox ...
Chemistry - El Camino College
... a. ___________ formulas in which each pair of shared electrons is represented by a line (e.g.: O=C=O). b. __________ formulas that show only the number of each type of atom in the molecule (e.g.: CO2) c. Atoms such as __ and __ can form single, double, and even triple covalent bonds with other atoms ...
... a. ___________ formulas in which each pair of shared electrons is represented by a line (e.g.: O=C=O). b. __________ formulas that show only the number of each type of atom in the molecule (e.g.: CO2) c. Atoms such as __ and __ can form single, double, and even triple covalent bonds with other atoms ...
Oxidation-Reduction Reactions Oxidation-Reduction
... Oxidation Numbers The concept of oxidation numbers is a simple way of keeping track of electrons in a reaction. The oxidation number (or oxidation state) of an atom in a substance is the actual charge of the atom if it exists as a monatomic ion. Alternatively, it is hypothetical charge assigned to t ...
... Oxidation Numbers The concept of oxidation numbers is a simple way of keeping track of electrons in a reaction. The oxidation number (or oxidation state) of an atom in a substance is the actual charge of the atom if it exists as a monatomic ion. Alternatively, it is hypothetical charge assigned to t ...
Chemical Equations and Reactions
... 2HCl 1 mol H2 1 mol Cl2 2 mol HCl 2.02 g H2 70.90 g Cl2 2 x 36.46 = 72.92 g HCl Diatomic molecules: H2, F2, Cl2 , Br2, I2, O2, N2 Balancing: 1) write out word equation is the problem is a written 2) balance atoms one at a time 3) first balance atoms that are combined into a formula 4) then balance p ...
... 2HCl 1 mol H2 1 mol Cl2 2 mol HCl 2.02 g H2 70.90 g Cl2 2 x 36.46 = 72.92 g HCl Diatomic molecules: H2, F2, Cl2 , Br2, I2, O2, N2 Balancing: 1) write out word equation is the problem is a written 2) balance atoms one at a time 3) first balance atoms that are combined into a formula 4) then balance p ...
Exam 3 Review Key
... a) The species that gains electrons is reduced and is called the oxidizing agent. The species that loses electrons is oxidized and is called the reducing agent. b) When balancing redox half reactions in aqueous solution, add water to the side deficient in oxygen, then add H+(aq) to the side deficien ...
... a) The species that gains electrons is reduced and is called the oxidizing agent. The species that loses electrons is oxidized and is called the reducing agent. b) When balancing redox half reactions in aqueous solution, add water to the side deficient in oxygen, then add H+(aq) to the side deficien ...
AP Chemistry Note Outline
... The oxidation number of any free element (an element not combined chemically with a different element) is zero, regardless of how complex its molecules might be. The oxidation number for any simple, monoatomic ion is equal to the charge on the ion. The sum of all the oxidation numbers of the a ...
... The oxidation number of any free element (an element not combined chemically with a different element) is zero, regardless of how complex its molecules might be. The oxidation number for any simple, monoatomic ion is equal to the charge on the ion. The sum of all the oxidation numbers of the a ...
Chemical Equations
... • If the compound is soluble that means that it will remain as ions in the solution, if it is insoluble then the compound precipitated out of the reaction (it became the precipitate or solid). • 2. If at least one INSOLUBLE product is formed (which means a precipitate will form) the reaction will oc ...
... • If the compound is soluble that means that it will remain as ions in the solution, if it is insoluble then the compound precipitated out of the reaction (it became the precipitate or solid). • 2. If at least one INSOLUBLE product is formed (which means a precipitate will form) the reaction will oc ...
A Thumbnail Review of Regents Chemistry
... (molarity of acid) x (volume of acid) = (molarity of base) x (volume of base) When a solution is neutralized in a titration, moles of OH- equal moles of H3O+ REDOX (or REDUCTION-OXIDATION) The sum of oxidation # in a formula must equal zero NaCl: (+1) + (-1) = 0 Na2S2O3: 2(+1) + 2x + 3(-2) = 0 oxida ...
... (molarity of acid) x (volume of acid) = (molarity of base) x (volume of base) When a solution is neutralized in a titration, moles of OH- equal moles of H3O+ REDOX (or REDUCTION-OXIDATION) The sum of oxidation # in a formula must equal zero NaCl: (+1) + (-1) = 0 Na2S2O3: 2(+1) + 2x + 3(-2) = 0 oxida ...
File
... Copper wire reacts with silver nitrate to form silver metal. What is the oxidizing agent in the reaction? ...
... Copper wire reacts with silver nitrate to form silver metal. What is the oxidizing agent in the reaction? ...
Oxidation Numbers
... reduction: a decrease in the oxidation number Cl2(g) + 2e− → 2Cl−(aq) Sn4+(aq) + 2e− → Sn2+(aq) (oxidation # becoming less positive or more negative) ...
... reduction: a decrease in the oxidation number Cl2(g) + 2e− → 2Cl−(aq) Sn4+(aq) + 2e− → Sn2+(aq) (oxidation # becoming less positive or more negative) ...
1) COMBINATION REACTION
... SUBSTANCES CHANGE PLACES WITH EACH OTHER IN COMPOUNDS – TYPICAL IN PRECIPITATION REACTIONS. AB + CD AD + BC AN EXAMPLE WOULD BE POTASSIUM IODIDE REACTING WITH LEAD (II) NITRATE TO FORM LEAD (II) IODIDE AND POTASSIUM NITRATE: 2 KI + Pb(NO3)2 2 KNO3 ...
... SUBSTANCES CHANGE PLACES WITH EACH OTHER IN COMPOUNDS – TYPICAL IN PRECIPITATION REACTIONS. AB + CD AD + BC AN EXAMPLE WOULD BE POTASSIUM IODIDE REACTING WITH LEAD (II) NITRATE TO FORM LEAD (II) IODIDE AND POTASSIUM NITRATE: 2 KI + Pb(NO3)2 2 KNO3 ...
Name - rwebbchem
... 1. Would a precipitate form from a reaction of aluminum chloride and sodium hydroxide? If yes, write and balance the equation that illustrates the reaction. ...
... 1. Would a precipitate form from a reaction of aluminum chloride and sodium hydroxide? If yes, write and balance the equation that illustrates the reaction. ...
Chapter 8: Chemical Reactions and Physical Changes
... • Periodic table: chart that arranges elements by atomic number into rows and columns according to similarities in their properties ...
... • Periodic table: chart that arranges elements by atomic number into rows and columns according to similarities in their properties ...
Redox
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.