3 - Study Hungary
... A: the atomic number decreases by 2 and the mass number by 4. B: the atomic number decreases by 4 and the mass number by 2. C: the atomic number increases by 1 and the mass number doesn’t change. D: the loss of a neutron decreases the mass number by 1 and the charge by 1. E: the loss of a proton dec ...
... A: the atomic number decreases by 2 and the mass number by 4. B: the atomic number decreases by 4 and the mass number by 2. C: the atomic number increases by 1 and the mass number doesn’t change. D: the loss of a neutron decreases the mass number by 1 and the charge by 1. E: the loss of a proton dec ...
Chapter 12
... Atoms can lose or gains more than one electron. Examples: Mg2+, Fe3+, S2-, and N3A monatomic ion contains only one atom. Mg2+, Fe3+, S2-, Al3+. A polyatomic ion contains more than one atom. OH-, CN-, NH4+. Chemical Formulas are used to express the composition of molecules and ionic compounds in term ...
... Atoms can lose or gains more than one electron. Examples: Mg2+, Fe3+, S2-, and N3A monatomic ion contains only one atom. Mg2+, Fe3+, S2-, Al3+. A polyatomic ion contains more than one atom. OH-, CN-, NH4+. Chemical Formulas are used to express the composition of molecules and ionic compounds in term ...
Chapter 6 - Chemistry
... - the energy that flows into or out of a system because of a difference in temperature between the thermodynamic system and its surroundings - as long as system and surroundings are in thermal contact, energy flows between them to establish temperature equality or thermal equilibrium - heat flows fr ...
... - the energy that flows into or out of a system because of a difference in temperature between the thermodynamic system and its surroundings - as long as system and surroundings are in thermal contact, energy flows between them to establish temperature equality or thermal equilibrium - heat flows fr ...
are physical changes - Chemistry Information Site
... We classify PROPERTIES of substances by whether or not you must change the identity of a substance to obtain information about the property ...
... We classify PROPERTIES of substances by whether or not you must change the identity of a substance to obtain information about the property ...
AP - 04 - Reactions in Aqueous Solutions
... (c) Because this is a binary compound, we expect chlorine to have an oxidation number of −1 (rule 3c). The sum of the oxidation numbers must equal zero (rule 4). Letting x equal the oxidation number of S, we have x + 2(−1) = 0. Consequently, the oxidation number of S must be +2. (d) Sodium, an alkal ...
... (c) Because this is a binary compound, we expect chlorine to have an oxidation number of −1 (rule 3c). The sum of the oxidation numbers must equal zero (rule 4). Letting x equal the oxidation number of S, we have x + 2(−1) = 0. Consequently, the oxidation number of S must be +2. (d) Sodium, an alkal ...
Chapter 4 Notes: Types of Reactions & Solution
... Species Present before rxn occurs: H+ (aq) + Cl- (aq) + Na+ (aq) + OH- (aq) (b/c HCl is a strong acid and NaOH is a strong base=complete dissociation of both acid & base) NaCl is soluble in water (check your table) so Na+ & Cl- are ...
... Species Present before rxn occurs: H+ (aq) + Cl- (aq) + Na+ (aq) + OH- (aq) (b/c HCl is a strong acid and NaOH is a strong base=complete dissociation of both acid & base) NaCl is soluble in water (check your table) so Na+ & Cl- are ...
AP Chem Unit 6
... taken between the two cities. The distance traveled, depends on how you make the trip. Thus elevation is a function that does not depend on the route (pathway) but distance is pathway dependent. Elevation is a state function and distance is not. ...
... taken between the two cities. The distance traveled, depends on how you make the trip. Thus elevation is a function that does not depend on the route (pathway) but distance is pathway dependent. Elevation is a state function and distance is not. ...
FINAL REVIEW Vella Name_______________ Period___
... 2. In a replacement reaction at STP, solid iron reacts with aqueous hydrogen chloride to produce aqueous iron (II) chloride and hydrogen gas. What volume in mL of 3.50 M hydrogen chloride is required to produce 2.75 L of hydrogen gas at STP ? ...
... 2. In a replacement reaction at STP, solid iron reacts with aqueous hydrogen chloride to produce aqueous iron (II) chloride and hydrogen gas. What volume in mL of 3.50 M hydrogen chloride is required to produce 2.75 L of hydrogen gas at STP ? ...
Reaction Rate Graphs C12-3
... In brewing, alcoholic fermentation is the conversion of sugar into carbon dioxide gas (CO2) and ethyl alcohol using yeast enzymes. One teaspoon of yeast is placed into a 100 mL graduated cylinder containing 47 mL of water to make a total volume of 50 mL. As the fermentation process occurs, bubbles a ...
... In brewing, alcoholic fermentation is the conversion of sugar into carbon dioxide gas (CO2) and ethyl alcohol using yeast enzymes. One teaspoon of yeast is placed into a 100 mL graduated cylinder containing 47 mL of water to make a total volume of 50 mL. As the fermentation process occurs, bubbles a ...
thermochermistry ap - Mater Academy Lakes High School
... 19.3 The Molecular Interpretation of Entropy Atoms and molecules are in constant motion and thusly posses some type of entropy Entropy increases (+S or S > 0) because of the following: o from solid to liquid or liquid to gas or solid to gas o fewer moles/molecules of a gas to more moles/molec ...
... 19.3 The Molecular Interpretation of Entropy Atoms and molecules are in constant motion and thusly posses some type of entropy Entropy increases (+S or S > 0) because of the following: o from solid to liquid or liquid to gas or solid to gas o fewer moles/molecules of a gas to more moles/molec ...
01.CN_Other pages/p1-9
... (b) (i) Which particle(s) is / are the ions? Hint 2 (ii) What is the relationship between P and Q? (iii) Do particles of P and Q have the same chemical properties? Explain your answer. (c) (i) Suggest a term to indicate the relationship between S and T. (ii) Explain why S and T have the same chemica ...
... (b) (i) Which particle(s) is / are the ions? Hint 2 (ii) What is the relationship between P and Q? (iii) Do particles of P and Q have the same chemical properties? Explain your answer. (c) (i) Suggest a term to indicate the relationship between S and T. (ii) Explain why S and T have the same chemica ...
CHEMISTRY 1.2 LECTURE
... II. State Functions State Functions are properties that on dependent upon its present state and not dependent upon the pathway to the present state. For example: the Internal energy (E) of a system is a state function = its value depends only on the state of the system and not how it arrived at that ...
... II. State Functions State Functions are properties that on dependent upon its present state and not dependent upon the pathway to the present state. For example: the Internal energy (E) of a system is a state function = its value depends only on the state of the system and not how it arrived at that ...
Chapter 8 Thermochemistry: Chemical Energy
... value depends only on the present state of the system ...
... value depends only on the present state of the system ...
2012 Coaches Institute Presentation
... formula of product Then, go back and balance equation. Al (s) + O2 (g) → Al2O3 (s) Al3+ and O24 Al (s) + 3 O2 (g) → 2 Al2O3 (s) ...
... formula of product Then, go back and balance equation. Al (s) + O2 (g) → Al2O3 (s) Al3+ and O24 Al (s) + 3 O2 (g) → 2 Al2O3 (s) ...
Chemical Reaction and Matter Review
... ** When acids and bases are added to each other they react to neutralize each other if an equal number of hydrogen and hydroxide ions are present. When this reaction occurs -salt and water are formed. HCl + NaOH NaCl + H2O (Acid) (Base)---(Salt) (Water) What are some useful applications of this reac ...
... ** When acids and bases are added to each other they react to neutralize each other if an equal number of hydrogen and hydroxide ions are present. When this reaction occurs -salt and water are formed. HCl + NaOH NaCl + H2O (Acid) (Base)---(Salt) (Water) What are some useful applications of this reac ...
summer fun - West Windsor-Plainsboro Regional School District
... Covalent compounds are formed between nonmetallic elements. The names of binary covalent compounds are obtained from the names of the two elements. The elements are named in the same order as they appear in the formula. The first element name is unchanged; the ending of the second becomes “-ide.” Th ...
... Covalent compounds are formed between nonmetallic elements. The names of binary covalent compounds are obtained from the names of the two elements. The elements are named in the same order as they appear in the formula. The first element name is unchanged; the ending of the second becomes “-ide.” Th ...
conductometric and potentiometric determination of the dissociation
... Λm – is the molar conductivity of the electrolyte solution [m2·S·mol-1] κW – is the electrical conductivity of deionised water [S·m-1] κP – is the electrical conductivity of the electrolyte solution [S·m-1] C0 – is the analytical molar concentration of the electrolyte [mol·m-3] Having knowledge abou ...
... Λm – is the molar conductivity of the electrolyte solution [m2·S·mol-1] κW – is the electrical conductivity of deionised water [S·m-1] κP – is the electrical conductivity of the electrolyte solution [S·m-1] C0 – is the analytical molar concentration of the electrolyte [mol·m-3] Having knowledge abou ...
CH 4: Chemical Reactions
... • When doing a titration you add titrant (standard solution) to the analyte (unknown concentration solution) until the endpoint or the equivalence point is reached. This point is when you have equal moles of titrant and analyte, from the volume of the titrant and analyte used and the molarity of the ...
... • When doing a titration you add titrant (standard solution) to the analyte (unknown concentration solution) until the endpoint or the equivalence point is reached. This point is when you have equal moles of titrant and analyte, from the volume of the titrant and analyte used and the molarity of the ...
F Practice Test #2 Solutions
... 9. High concentrations of aqueous solutions of potassium sulfide and nickel(II) nitrate are mixed together. Which statement is correct? A) No precipitate forms. B) NiS will precipitate from solution. C) No reaction will occur. D) Both KNO3 and NiS precipitate from solution. E) KNO3 will precipitate ...
... 9. High concentrations of aqueous solutions of potassium sulfide and nickel(II) nitrate are mixed together. Which statement is correct? A) No precipitate forms. B) NiS will precipitate from solution. C) No reaction will occur. D) Both KNO3 and NiS precipitate from solution. E) KNO3 will precipitate ...
The Advanced Placement Examination in Chemistry Part I – Multiple
... (a) Explain why the student can correctly conclude that the hydrate was heated a sufficient number of times in the experiment. (b) Use the data above to (i) calculate the total number of moles of water lost when the sample was heated, and (ii) determine the formula of the hydrated compound. (c) A di ...
... (a) Explain why the student can correctly conclude that the hydrate was heated a sufficient number of times in the experiment. (b) Use the data above to (i) calculate the total number of moles of water lost when the sample was heated, and (ii) determine the formula of the hydrated compound. (c) A di ...
Electrolysis of water
Electrolysis of water is the decomposition of water (H2O) into oxygen (O2) and hydrogen gas (H2) due to an electric current being passed through the water.This technique can be used to make hydrogen fuel (hydrogen gas) and breathable oxygen; though currently most industrial methods make hydrogen fuel from natural gas instead.