17 Questions
What is the product formed when calcium hydroxide reacts with carbon dioxide in air?
Calcium carbonate
Which chemical formula is associated with marble?
CaCO3
Which type of reaction involves two or more substances combining to form a single product?
Combination reaction
What is the general term for reactions that release heat during the formation of products?
Exothermic reactions
Which gas is produced during the burning of natural gas according to the text?
Carbon dioxide
What is the final state of rice, potatoes, and bread during digestion according to the text?
Carbohydrates
Which symbol is used to represent a substance present as a solution in water?
(aq)
In the reaction 3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g), why is (g) used with H2O?
To specify that water is in the form of steam
When are physical states usually included in a chemical equation?
When the reaction needs to specify the physical form of a substance
In the equation 340 atm CO(g) + 2H2(g) → CH3OH(l), what do the reaction conditions 340 atm represent?
Pressure
What does the presence of 'Chlorophyll' indicate in this equation: 6CO2(aq) +12H2O(l) → C6H12O6(aq) + 6O2(aq) + 6H2O(l)?
Sunlight is necessary for this reaction
Why are physical states not usually included in a chemical equation?
To make the equation simpler
What is the chemical equation for the reaction between magnesium and oxygen?
Mg + O2 -> MgO
Which observation does NOT indicate a chemical reaction has taken place?
No change in temperature
What type of gas is formed by the action of dilute sulphuric acid on zinc?
Hydrogen gas
What happens when lead nitrate solution is mixed with potassium iodide solution?
Formation of lead iodide
Which compound is formed by the burning of magnesium ribbon in air?
Magnesium oxide
This quiz explores the reaction between calcium hydroxide and carbon dioxide, leading to the formation of calcium carbonate. It also discusses how this reaction is used for white washing walls and its connection to the chemical composition of marble.
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