Interactive Flashcards
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What is a Chemical Equation?
A symbolic representation of a chemical reaction showing reactants and products with their chemical formulas
What is a Balanced Chemical Equation?
An equation where the number of atoms of each element is equal on both reactant and product sides
What is a Combination Reaction?
A reaction where two or more reactants combine to form a single product (A + B → AB)
What is a Decomposition Reaction?
A reaction where a single compound breaks down into two or more simpler substances (AB → A + B)
What is Displacement Reaction?
A reaction where a more reactive element displaces a less reactive element from its compound (A + BC → AC + B)
What is Double Displacement?
A reaction where ions of two compounds exchange places to form two new compounds (AB + CD → AD + CB)
What is an Endothermic Reaction?
A reaction that absorbs heat energy from surroundings, causing temperature to decrease
What is an Exothermic Reaction?
A reaction that releases heat energy to surroundings, causing temperature to increase
What is Oxidation?
Loss of electrons, gain of oxygen, or loss of hydrogen by a substance
What is Reduction?
Gain of electrons, loss of oxygen, or gain of hydrogen by a substance
Visual Diagrams
Types of Chemical Reactions
flowchart TD
A[Chemical Reactions] --> B[Combination Reaction]
A --> C[Decomposition Reaction]
A --> D[Displacement Reaction]
A --> E[Double Displacement]
A --> F[Redox Reactions]
B --> B1[A + B → AB]
C --> C1[AB → A + B]
D --> D1[A + BC → AC + B]
E --> E1[AB + CD → AD + CB]
F --> F1[Oxidation & Reduction]
style A fill:#4a90e2,stroke:#333,stroke-width:3px,color:#fff
style B fill:#ff6b6b,stroke:#333,stroke-width:2px,color:#fff
style C fill:#4ecdc4,stroke:#333,stroke-width:2px,color:#fff
style D fill:#45b7d1,stroke:#333,stroke-width:2px,color:#fff
style E fill:#96ceb4,stroke:#333,stroke-width:2px,color:#fff
style F fill:#feca57,stroke:#333,stroke-width:2px,color:#fff
Components of Chemical Equations
mindmap
root((Chemical Equation))
Reactants
Starting Materials
Left Side of Arrow
What We Begin With
Products
Final Substances
Right Side of Arrow
What We Get
Coefficients
Balance Numbers
Show Quantity
Conservation of Mass
States
Solid (s)
Liquid (l)
Gas (g)
Aqueous (aq)
Arrow
Direction of Reaction
Yields/Produces
Separates Sides
Reaction Types Summary
| Reaction Type |
General Form |
Example |
Key Characteristics |
| Combination |
A + B → AB |
2H₂ + O₂ → 2H₂O |
Two or more reactants form one product |
| Decomposition |
AB → A + B |
2H₂O → 2H₂ + O₂ |
One reactant breaks into multiple products |
| Displacement |
A + BC → AC + B |
Zn + CuSO₄ → ZnSO₄ + Cu |
More reactive element displaces less reactive |
| Double Displacement |
AB + CD → AD + CB |
AgNO₃ + NaCl → AgCl + NaNO₃ |
Exchange of ions between compounds |
| Precipitation |
Solution + Solution → Precipitate |
Pb(NO₃)₂ + 2KI → PbI₂ + 2KNO₃ |
Insoluble solid forms from solutions |
Energy Changes in Reactions
Exothermic Reactions
Release energy (heat) to surroundings
Examples: Combustion, Respiration
Feel: Warm or hot
Endothermic Reactions
Absorb energy (heat) from surroundings
Examples: Photosynthesis, Melting ice
Feel: Cool or cold
Oxidation and Reduction
- Oxidation: Loss of electrons, gain of oxygen, loss of hydrogen
- Reduction: Gain of electrons, loss of oxygen, gain of hydrogen
- Redox Reactions: Involve both oxidation and reduction simultaneously
- Memory Aid: OIL RIG (Oxidation Is Loss, Reduction Is Gain)