Glue

High school (ages 12+)
Making & Design

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/glue

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 historical adhesive sources?Animal collagen, casein, plant starches, and natural resins
2. What is the primary bonding mechanisms?Adsorption, mechanical interlocking, diffusion, and chemical bonding
3. What is glue and how does it stick things together?Glue is a sticky substance that can bond surfaces by flowing into tiny cracks, sticking with small forces, and sometimes forming chemical bonds.
4. Why did people use natural glues in ancient times?Ancient people made glue from plant sap, starch, or animal parts like bone and milk, which helped them build tools and shelters.

Substrate: The surface or material to which an adhesive is applied.
Rheology: The study of the flow of matter, primarily in a liquid or gas state.
Polymer: A large molecule composed of repeating structural units, typically connected by covalent chemical bonds.