Biodiesel

High school (ages 12+)
Environment & Earth

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/biodiesel

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the chemical classification?Mono-alkyl esters derived from biological sources
2. What is the primary production method?Transesterification of vegetable oils or animal fats with alcohol
3. How is biodiesel made?Oil or fat is mixed with an alcohol such as methanol or ethanol and a catalyst like sodium hydroxide. The reaction separates fatty acids from glycerol, creating biodiesel and glycerol as a by‑product.
4. Why do people blend biodiesel with regular diesel?Pure biodiesel (B100) can cause problems in some engines, so blends such as B20 or B5 mix biodiesel with petrodiesel to keep engines working well while still using renewable fuel.

Triglycerides: A type of fat or oil molecule that is the primary component of vegetable oils and animal fats.
Catalyst: A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
Life Cycle Assessment: An evaluation of the environmental impacts of a product or process throughout its entire life.