Podcast
Questions and Answers
What is the visible, gaseous part of a fire called?
What is the visible, gaseous part of a fire called?
- Steam
- Fume
- Smoke
- Flame (correct)
When flames are hot enough to have ionized gaseous components, what are they considered?
When flames are hot enough to have ionized gaseous components, what are they considered?
- Gas
- Liquid
- Solid
- Plasma (correct)
What causes the fuel molecules in candle wax to vaporize?
What causes the fuel molecules in candle wax to vaporize?
- Light exposure
- Chemical reaction with air
- Applied heat (correct)
- Pressure
What are the yellow parts in the middle of a flame from a candle?
What are the yellow parts in the middle of a flame from a candle?
What do goldsmiths use the higher parts of a flame with a metallic blow-pipe for?
What do goldsmiths use the higher parts of a flame with a metallic blow-pipe for?