Chemistry Set for 4 Year Old ; Plaster Model
Are there any Chemistry Set for 4 Year Old ? Yes. The simple Chemistry set is a basic chemistry kit for kids.
This kit is perfect for kid’s STEM education. It’s suitable for schools, learning centers and education companies for business. Children must do it by teachers or parents.
All of the kits for wholesales or OEM/ODM orders and we don’t do retails.
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 years.
1. A preliminary understanding of plaster and its changing characteristics
2. Understand the role of gypsum in life
3. Stimulate children’s curiosity, shape the spirit of scientific exploration, and exercise preliminary observation and practical skills.
Mixing ratio of gypsum and water
Develop enough patience and wait for the plaster to form
Activity preparation materials
1. Pour gypsum powder into the plastic cup.
2. According to the ratio of water: gypsum, it is adjusted according to 1:3. And use a stirring rod to stir and shape.
3. Pour the gypsum slurry into the mold and fill the mold
4. Take out the plaster model after setting
1. The solidification of gypsum powder in water is a chemical reaction
2. The gypsum molecules recombine into dihydrate gypsum and release heat. Approximately 20% of the water enters the core molecule, and the excess water evaporates, leaving gaps to form small pores. The total volume increases, the expansion rate is 0.5%-1%
3. The characteristic of plaster is commonly used to make various plaster models, and it is also commonly used to fix fracture positions in medicine.
1. Exploring what other functions does plaster have?
2. What else is similar to plaster?