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Questions and Answers
Which of the following are the 5 types of reactions?
Which of the following are the 5 types of reactions?
- Double Replacement (correct)
- Synthesis (correct)
- Single Replacement (correct)
- Combustion (correct)
- Decomposition (correct)
What is the formula for a synthesis reaction?
What is the formula for a synthesis reaction?
element + element = compound
What is a decomposition reaction?
What is a decomposition reaction?
When a compound falls apart
What happens in a single replacement reaction?
What happens in a single replacement reaction?
What is the formula for a decomposition reaction?
What is the formula for a decomposition reaction?
What is a synthesis reaction?
What is a synthesis reaction?
What is the formula for a single replacement reaction?
What is the formula for a single replacement reaction?
What occurs in a double replacement reaction?
What occurs in a double replacement reaction?
What is the formula for a double replacement reaction?
What is the formula for a double replacement reaction?
What is the formula for a combustion reaction?
What is the formula for a combustion reaction?
What happens during a combustion reaction?
What happens during a combustion reaction?
Evidence of a chemical change includes color change, new odor, formation of gas or solid, __________.
Evidence of a chemical change includes color change, new odor, formation of gas or solid, __________.
Who was the first person to balance a chemical equation?
Who was the first person to balance a chemical equation?
What do coefficients tell us in a chemical equation?
What do coefficients tell us in a chemical equation?
What do subscripts indicate in a chemical formula?
What do subscripts indicate in a chemical formula?
What principle did Antoine Lavoisier discover regarding mass during a chemical reaction?
What principle did Antoine Lavoisier discover regarding mass during a chemical reaction?
What is a catalyst?
What is a catalyst?
What does the conservation of mass principle state?
What does the conservation of mass principle state?
What does 'g' symbolize in a chemical equation?
What does 'g' symbolize in a chemical equation?
What does 'l' symbolize in a chemical equation?
What does 'l' symbolize in a chemical equation?
What does 's' symbolize in a chemical equation?
What does 's' symbolize in a chemical equation?
When are energy symbols above the arrow used?
When are energy symbols above the arrow used?
What does a triangle symbolize in a chemical reaction?
What does a triangle symbolize in a chemical reaction?
What does 'hv' symbolize in a reaction?
What does 'hv' symbolize in a reaction?
What does 'shck' symbolize in a reaction?
What does 'shck' symbolize in a reaction?
What does 'elec' symbolize in a chemical reaction?
What does 'elec' symbolize in a chemical reaction?
What does 'pt' above the arrow symbolize?
What does 'pt' above the arrow symbolize?
What does 'aq' above the arrow symbolize?
What does 'aq' above the arrow symbolize?
Study Notes
Types of Reactions
- Synthesis reactions combine elements or simpler compounds to form a new compound.
- Decomposition reactions involve a compound breaking down into its constituent elements.
- Single replacement reactions occur when one element replaces another in a compound.
- Double replacement reactions involve the exchange of ions between two compounds.
- Combustion reactions involve a compound reacting with oxygen, producing carbon dioxide and water.
Reaction Formulas
- Synthesis: element + element → compound
- Decomposition: compound → element + element
- Single replacement: element + compound → element + compound
- Double replacement: compound + compound → compound + compound
- Combustion: compound + oxygen → carbon dioxide + water
Chemical Change Indicators
- Color change can signify a chemical reaction.
- New odors may indicate the formation of different substances.
- Emission of light often accompanies chemical reactions.
- Formation of gas or solid is a sign of a reaction taking place.
- Heat release or absorption is evidence of a chemical change.
Balancing Chemical Equations
- Antoine Lavoisier was the first to balance chemical equations, establishing the conservation of mass.
- Coefficients in a chemical equation denote the number of molecules or compounds involved.
- Subscripts indicate the number of atoms of each element in a compound.
Catalysts and Energy
- A catalyst accelerates a reaction without being consumed in the process.
- The principle of conservation of mass states that matter cannot be created or destroyed in a chemical reaction.
Symbols in Reactions
- "g" represents gas, "l" represents liquid, and "s" represents solid states of matter.
- Energy symbols above an arrow indicate the requirement of energy in decomposition reactions.
- A triangle above an arrow symbolizes heat, while "hv" indicates light energy.
- "shck" signifies mechanical energy and "elec" refers to electrical energy.
- "pt" above the arrow represents the presence of a catalyst, and "aq" denotes substances dissolved in water.
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Description
Test your knowledge on the types of chemical reactions and balancing equations with these flashcards. This quiz covers key concepts including synthesis, decomposition, single and double replacement, and combustion. Perfect for reviewing essential topics in general chemistry.
