Combustion and Flame
Science · Grade 8 · Week 6 · 25 questions
Combustion is the chemical reaction between a fuel and oxygen that releases heat and light. Understanding fuels and combustion is key to energy production and environmental science.
What you'll practise
- Find the mean of data sets
- Explain the process of combustion
- Identify types of fuels and their sources
- Describe renewable vs. non-renewable energy
All 25 questions in this Combustion and Flame quiz
Grade 8 Science — Combustion and Flame: 25 practice questions with instant scoring and explanations.
- What are the three essential requirements for combustion?
- What is the temperature at which a substance catches fire called?
- Which substance is highly inflammable?
- What are the three zones of a candle flame?
- Which zone of a candle flame is the hottest?
- What is the color of the non-luminous zone of a candle flame?
- What type of combustion occurs when a substance burns slowly without producing a flame?
- What is spontaneous combustion?
- What happens during incomplete combustion?
- What is the calorific value of a fuel?
- Which fuel has the highest calorific value?
- What is the chemical formula for complete combustion of methane?
- Why is incomplete combustion a concern?
- What is the primary component of a flame?
- Which gas is produced during the complete combustion of any hydrocarbon fuel?
- What is fuel efficiency?
- Which material should be used to extinguish an electrical fire?
- What does the word 'combustible' mean?
- Why does a candle flame point upward?
- What is the main product of burning coal completely?
- Which of the following best describes rapid combustion?
- What is the relationship between oxygen and combustion rate?
- Why is hydrogen considered an ideal fuel?
- What should be done if someone's clothes catch fire?
- Which of the following is NOT a requirement for combustion?
Question 1 of 250 correct so far