Podcast
Questions and Answers
What type of reaction occurs when a single substance decomposes to give two or more substances?
What type of reaction occurs when a single substance decomposes to give two or more substances?
- Double displacement reaction
- Decomposition reaction (correct)
- Combination reaction
- Exothermic reaction
In which type of reaction does a displacement reaction occur when an element displaces another element from its compound?
In which type of reaction does a displacement reaction occur when an element displaces another element from its compound?
- Decomposition reaction
- Precipitation reaction
- Combination reaction
- Reduction reaction (correct)
What is oxidation defined as in a chemical reaction?
What is oxidation defined as in a chemical reaction?
- Gain of oxygen (correct)
- Gain of hydrogen
- Loss of hydrogen
- Loss of oxygen
Which type of reactions produce insoluble salts?
Which type of reactions produce insoluble salts?
In an exothermic reaction, what is characteristic of the heat?
In an exothermic reaction, what is characteristic of the heat?
What is reduction defined as in a chemical reaction?
What is reduction defined as in a chemical reaction?
What happens to a substance if it gains oxygen during a reaction?
What happens to a substance if it gains oxygen during a reaction?
If a substance loses oxygen during a reaction, what is the term used to describe this process?
If a substance loses oxygen during a reaction, what is the term used to describe this process?
In the reaction MnO2 + 4HCl → MnCl2 + 2H2O + Cl2, what is happening to MnO2?
In the reaction MnO2 + 4HCl → MnCl2 + 2H2O + Cl2, what is happening to MnO2?
During the reaction ZnO + C → Zn + CO, what is happening to ZnO?
During the reaction ZnO + C → Zn + CO, what is happening to ZnO?
If a substance gains oxygen or loses hydrogen during a reaction, what is the term used to describe this process?
If a substance gains oxygen or loses hydrogen during a reaction, what is the term used to describe this process?
When a magnesium ribbon burns with a dazzling flame in air and changes into magnesium oxide, is magnesium being oxidised or reduced?
When a magnesium ribbon burns with a dazzling flame in air and changes into magnesium oxide, is magnesium being oxidised or reduced?
In the reaction 2PbO(s) + C(s) → 2Pb(s) + CO2(g), which statement is incorrect?
In the reaction 2PbO(s) + C(s) → 2Pb(s) + CO2(g), which statement is incorrect?
What type of reaction is Fe2O3 + 2Al → Al2O3 + 2Fe?
What type of reaction is Fe2O3 + 2Al → Al2O3 + 2Fe?
When dilute hydrochloric acid is added to iron fillings, what is produced?
When dilute hydrochloric acid is added to iron fillings, what is produced?
What is the purpose of balancing a chemical equation?
What is the purpose of balancing a chemical equation?
Which statement can be correctly translated into a balanced chemical equation?
Which statement can be correctly translated into a balanced chemical equation?
Balance the following chemical equation: BaCl2 + H2SO4 → BaSO4 + HCl.
Balance the following chemical equation: BaCl2 + H2SO4 → BaSO4 + HCl.
