Concentrate

High school (ages 12+)
Science & Technology

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/concentrate

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 core principle?Reduction of diluent (typically water) to increase solute density
2. What is the historical significance?Enabled long-term food preservation and efficient resource management
3. How do people make fruit juice concentrate?They heat the juice and let the water evaporate, leaving behind the sugars, vitamins, and flavors in a thick liquid that can be mixed back with water later.
4. Why did people start making concentrates a long time ago?Removing water helps keep food from spoiling, so ancient people dried fruits or boiled liquids to preserve them for later use.

Diluent: A substance, typically a solvent like water, that is removed to increase the concentration of another component.
Solvent: A liquid capable of dissolving other substances, commonly water in food concentrates.
Lyophilization: A process of freeze-drying, removing water from a frozen substance via sublimation under vacuum.
Water Activity: The measure of unbound water available for microbial growth and chemical reactions.