World 4 · Oil and Water Make Friends · 10 min · PRO
Why oil and water separate
Polarity and density
PRO · Kitchen Chemistry
World 4: Oil and Water Make Friends is part of PRO
The first world of Kitchen Chemistry is free. PRO opens the other 19 lessons in 5 worlds — simulations, quizzes and all.
PRO includes
- All 60 labs — every world, every lesson
- Practice exams and certificates
$8.33/mo, billed yearly ($99.99) · or $39.99 monthly