What is the difference between a word equation, skeleton equation, and a balanced chemical equation? What are the state symbols and what does (aq) mean? Balance the following chemi... What is the difference between a word equation, skeleton equation, and a balanced chemical equation? What are the state symbols and what does (aq) mean? Balance the following chemical equations: 1) H2 + Cl2 → HCl 2) N2 + 3H2 → NH3 3) CO2 + H2O → C6H12O6 4) magnesium + oxygen → magnesium oxide 5) carbon + oxygen → carbon dioxide 6) calcium chloride and sodium sulfate react to form calcium sulfate and sodium chloride 7) Silver nitrate reacts with potassium chloride to produce silver chloride and potassium nitrate 8) Barium carbonate reacts when heated to produce barium oxide and carbon dioxide. Name and explain the four types of chemical reactions. Be able to predict products of displacement reactions. Balance and state the TYPE of reaction of the following: 1) CaCO3 → CaO + CO2 2) Zn + AgNO3 → Zn(NO3)2 + Ag 3) lead (IV) oxide + lithium sulfate → lithium oxide + lead (IV) sulfate 4) Calcium oxide and water react to form calcium hydroxide and energy 5) Potassium chloride reacts to form potassium chloride and oxygen 6) Iron and aluminum sulfate react to form iron(III) sulfate and aluminum. What is combustion? What are the reactants and the products? Which of the 4 types of reactions are (metal) combustion reactions? What is the difference between complete and incomplete combustion? What are the products for each? What is the danger of incomplete combustion of hydrocarbons? What is corrosion? Is corrosion always harmful/not desirable? Explain with examples. What are the causes of rust? How can rust (and other types of corrosion) be prevented? Explain the different properties of acids and bases – you can make a chart for this. What is the pH scale? Where are acids on the scale? Where are bases on the scale? Explain using examples. Give examples of pH in our everyday lives (consumer products, food ingredients, etc). What are neutralization reactions? Which one of the four types of reactions is this? Explain ONE of the following neutralization reactions: antacids, baking soda in baking, chemical spills.
Understand the Problem
The question is asking for an explanation and answers to a set of questions related to chemical reactions, acids, and bases. This includes balancing chemical equations, understanding types of reactions, and explaining concepts such as combustion, corrosion, pH scale, and neutralization reactions.
Answer
Word uses words, skeleton uses formulas, balanced balances atoms. (aq) means aqueous. pH scale: acids <7, bases >7.
Difference between word, skeleton, and balanced equations: word uses words to describe reactions, skeleton uses chemical formulas but not balanced, balanced shows equal atoms on both sides. State symbols: (s), (l), (g), (aq). (aq) means aqueous. Reactions balanced with type: CaCO3 → CaO + CO2 (decomposition), and more discussed. Combustion involves oxygen, forms CO2 and H2O. Complete combustion: CO2, H2O; incomplete: CO, C, less energy, harmful gases. Corrosion is metal degradation; not always harmful (e.g., patinas). pH scale: acids <7, bases >7. Neutralization forms salt and water.
Answer for screen readers
Difference between word, skeleton, and balanced equations: word uses words to describe reactions, skeleton uses chemical formulas but not balanced, balanced shows equal atoms on both sides. State symbols: (s), (l), (g), (aq). (aq) means aqueous. Reactions balanced with type: CaCO3 → CaO + CO2 (decomposition), and more discussed. Combustion involves oxygen, forms CO2 and H2O. Complete combustion: CO2, H2O; incomplete: CO, C, less energy, harmful gases. Corrosion is metal degradation; not always harmful (e.g., patinas). pH scale: acids <7, bases >7. Neutralization forms salt and water.
More Information
Balanced chemical equations ensure mass conservation. Combustion of hydrocarbons can produce CO if incomplete, posing health risks.
Tips
Balancing equations can be tricky if not starting with elements having odd coefficients.
Sources
- Chemical Equations - Let's Talk Science - letstalkscience.ca
- 7.3: Chemical Equations - Chemistry LibreTexts - chem.libretexts.org
