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AP Chemistry Flashcards: Representations Of Reactions

Study Representations Of Reactions in AP Chemistry with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

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What this deck covers

This deck focuses on Representations Of Reactions, giving you a quick way to review the definitions, rules, and examples that matter most for AP Chemistry.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

AP Chemistry Flashcards: Representations Of Reactions

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QUESTION

What is meant by 'reaction stoichiometry'?

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ANSWER

Proportional relationships in a balanced equation. Molar ratios from coefficients in balanced equations.

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Flashcard 1: What is meant by 'reaction stoichiometry'?

Answer: Proportional relationships in a balanced equation. Molar ratios from coefficients in balanced equations.

Flashcard 2: Balance the equation: KClO3→KCl+O2\text{KClO}_3 \rightarrow \text{KCl} + \text{O}_2KClO3​→KCl+O2​

Answer: 2KClO3→2KCl+3O22 \text{KClO}_3 \rightarrow 2 \text{KCl} + 3 \text{O}_22KClO3​→2KCl+3O2​. Balance potassium and chlorine first, then oxygen.

Flashcard 3: What type of reaction is 2H2+O2→2H2O2 \text{H}_2 + \text{O}_2 \rightarrow 2 \text{H}_2\text{O}2H2​+O2​→2H2​O?

Answer: Combination reaction. Two elements combine to form a single compound.

Flashcard 4: Identify the products in the combustion of methane: CH4+2O2→CO2+2H2O\text{CH}_4 + 2 \text{O}_2 \rightarrow \text{CO}_2 + 2 \text{H}_2\text{O}CH4​+2O2​→CO2​+2H2​O

Answer: CO2\text{CO}_2CO2​, 2H2O2 \text{H}_2\text{O}2H2​O. Complete combustion produces carbon dioxide and water.

Flashcard 5: What is the product of the neutralization reaction between H2SO4\text{H}_2\text{SO}_4H2​SO4​ and KOH\text{KOH}KOH?

Answer: K2SO4\text{K}_2\text{SO}_4K2​SO4​ and H2O\text{H}_2\text{O}H2​O. Acid neutralization forms salt plus water.

Flashcard 6: Which symbol in a chemical equation indicates a gaseous state?

Answer: (g)(g)(g). Standard notation for gas phase in chemical equations.

Flashcard 7: What does the Δ symbol above the arrow in a chemical equation indicate?

Answer: Heat is applied. Delta indicates thermal energy is required for the reaction.

Flashcard 8: What is the balanced equation for the synthesis of water from H2\text{H}_2H2​ and O2\text{O}_2O2​?

Answer: 2H2+O2→2H2O2 \text{H}_2 + \text{O}_2 \rightarrow 2 \text{H}_2\text{O}2H2​+O2​→2H2​O. Combination of hydrogen and oxygen gases forms water.

Flashcard 9: State the formula for the combustion reaction of ethanol: C2H5OH\text{C}_2\text{H}_5\text{OH}C2​H5​OH

Answer: C2H5OH+3O2→2CO2+3H2O\text{C}_2\text{H}_5\text{OH} + 3 \text{O}_2 \rightarrow 2 \text{CO}_2 + 3 \text{H}_2\text{O}C2​H5​OH+3O2​→2CO2​+3H2​O. Complete combustion of alcohol produces CO2\text{CO}_2CO2​ and H2O\text{H}_2\text{O}H2​O.

Flashcard 10: What is the result of combustion reactions in terms of energy?

Answer: Exothermic process. Combustion releases energy as heat and light.

Flashcard 11: What type of reaction is AB→A+B\text{AB} \rightarrow \text{A} + \text{B}AB→A+B?

Answer: Decomposition reaction. One compound breaks down into two or more simpler substances.

Flashcard 12: Balance the equation: C3H8+O2→CO2+H2O\text{C}_3\text{H}_8 + \text{O}_2 \rightarrow \text{CO}_2 + \text{H}_2\text{O}C3​H8​+O2​→CO2​+H2​O

Answer: C3H8+5O2→3CO2+4H2O\text{C}_3\text{H}_8 + 5 \text{O}_2 \rightarrow 3 \text{CO}_2 + 4 \text{H}_2\text{O}C3​H8​+5O2​→3CO2​+4H2​O. Balance carbon first (3), then hydrogen (8), finally oxygen (10).

Flashcard 13: Which symbol in a chemical equation indicates a liquid state?

Answer: (l)(l)(l). Standard notation for liquid phase in chemical equations.

Flashcard 14: State the formula for the synthesis of ammonia: N2+H2\text{N}_2 + \text{H}_2N2​+H2​

Answer: N2+3H2→2NH3\text{N}_2 + 3 \text{H}_2 \rightarrow 2 \text{NH}_3N2​+3H2​→2NH3​. Haber process combines nitrogen and hydrogen gases.

Flashcard 15: What does a balanced chemical equation represent?

Answer: Equal number of each type of atom on both sides. Atoms are conserved - same number before and after reaction.

Flashcard 16: Identify the type of reaction: AgNO3+NaCl→AgCl+NaNO3\text{AgNO}_3 + \text{NaCl} \rightarrow \text{AgCl} + \text{NaNO}_3AgNO3​+NaCl→AgCl+NaNO3​

Answer: Double replacement reaction. Cations and anions exchange between the two compounds.

Flashcard 17: What does the term 'stoichiometry' refer to in chemical reactions?

Answer: Quantitative relationships between reactants and products. Mathematical ratios between substances in balanced equations.

Flashcard 18: What type of reaction is AB+CD→AD+CB\text{AB} + \text{CD} \rightarrow \text{AD} + \text{CB}AB+CD→AD+CB?

Answer: Double replacement reaction. Both compounds exchange their positive and negative ions.

Flashcard 19: Which symbol in a chemical equation indicates a solid state?

Answer: (s)(s)(s). Standard notation for solid phase in chemical equations.

Flashcard 20: What type of reaction is C6H12O6+6O2→6CO2+6H2O\text{C}_6\text{H}_{12}\text{O}_6 + 6 \text{O}_2 \rightarrow 6 \text{CO}_2 + 6 \text{H}_2\text{O}C6​H12​O6​+6O2​→6CO2​+6H2​O?

Answer: Combustion reaction. Glucose burns in oxygen to produce energy.

Flashcard 21: What is indicated by a double-headed arrow in a chemical equation?

Answer: Reversible reaction. Equilibrium arrows show reaction can proceed in both directions.

Flashcard 22: What is the product of a complete combustion of hydrocarbons?

Answer: CO2\text{CO}_2CO2​ and H2O\text{H}_2\text{O}H2​O. Complete oxidation yields only these two products.

Flashcard 23: What type of reaction is CaCO3→CaO+CO2\text{CaCO}_3 \rightarrow \text{CaO} + \text{CO}_2CaCO3​→CaO+CO2​?

Answer: Decomposition reaction. Calcium carbonate breaks down into two simpler compounds.

Flashcard 24: What is meant by 'reaction stoichiometry'?

Answer: Proportional relationships in a balanced equation. Molar ratios from coefficients in balanced equations.

Flashcard 25: Balance the equation: KClO3→KCl+O2\text{KClO}_3 \rightarrow \text{KCl} + \text{O}_2KClO3​→KCl+O2​

Answer: 2KClO3→2KCl+3O22 \text{KClO}_3 \rightarrow 2 \text{KCl} + 3 \text{O}_22KClO3​→2KCl+3O2​. Balance potassium and chlorine first, then oxygen.

Flashcard 26: Identify the type of reaction: H2+Cl2→2HCl\text{H}_2 + \text{Cl}_2 \rightarrow 2 \text{HCl}H2​+Cl2​→2HCl

Answer: Combination reaction. Two elements combine to form one compound.

Flashcard 27: What type of reaction is 2H2+O2→2H2O2 \text{H}_2 + \text{O}_2 \rightarrow 2 \text{H}_2\text{O}2H2​+O2​→2H2​O?

Answer: Combination reaction. Two elements combine to form a single compound.

Flashcard 28: Identify the state of matter for H2O(l)H_2O (l)H2​O(l) in a chemical equation.

Answer: Liquid. The (l)(l)(l) symbol specifically denotes liquid state.

Flashcard 29: Which type of reaction involves the exchange of ions between two compounds?

Answer: Double replacement reaction. Positive and negative ions switch partners between compounds.

Flashcard 30: Balance the equation: Fe+O2→Fe2O3\text{Fe} + \text{O}_2 \rightarrow \text{Fe}_2\text{O}_3Fe+O2​→Fe2​O3​

Answer: 4Fe+3O2→2Fe2O34 \text{Fe} + 3 \text{O}_2 \rightarrow 2 \text{Fe}_2\text{O}_34Fe+3O2​→2Fe2​O3​. Balance iron atoms first, then oxygen atoms last.