Chemistry- Balancing chemical equations, energy diagrams, the five types of chemical reactions

0.0(0)
studied byStudied by 0 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/10

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

11 Terms

1
New cards

What is a synthesis (combination) reaction?

  • Formula: A + B → AB

  • Energy: Often exothermic.

  • Example: 2H₂ + O₂ → 2H₂O

2
New cards

What is a decomposition reaction?

  • Formula: AB → A + B

  • Energy: Usually endothermic.

  • Example: 2H₂O → 2H₂ + O₂

3
New cards

What is a single replacement reaction?

  • Formula: A + BC → AC + B

  • Energy: Often exothermic.

  • Example: Zn + 2HCl → ZnCl₂ + H₂

4
New cards

What is a double replacement reaction?

  • Formula: AB + CD → AD + CB

  • Energy: Varies; may form precipitate, gas, or water.

  • Example: AgNO₃ + NaCl → AgCl + NaNO₃

5
New cards

What is a combustion reaction?

  • Formula: Hydrocarbon + O₂ → CO₂ + H₂O

  • Description: Substance burns in oxygen, releasing energy.

  • Energy: Strongly exothermic.

  • Example: CH₄ + 2O₂ → CO₂ + 2H₂O

6
New cards

What’s the balanced form of CH₄ + O₂ → CO₂ + H₂O?

CH₄ + 2O₂ → CO₂ + 2H₂O

7
New cards

What are the key features of an energy diagram?

  • Reactants

  • Products

  • Activation Energy (Ea)

  • Peak = transition state

8
New cards

What defines an exothermic reaction on an energy diagram?

  • Energy is released

  • Products have lower energy than reactants

  • Example: CH₄ + O₂ → CO₂ + H₂O

9
New cards

What defines an endothermic reaction on an energy diagram?

  • Energy is absorbed

  • Products have higher energy than reactants

  • Example: CaCO₃ → CaO + CO₂

10
New cards

Exothermic

heat flows out, product ends lower

11
New cards

Endothermic

heat goes in, product ends higher