October 15, 2016
Please print and complete the crossword puzzle below. Once completed, scan the crossword puzzle and send it to The Cosmetic Chemist's Staff Manager, Silvia Mendiola Buj. The first contestant that sends a correct crossword puzzle is eligible to win a $50 gift card.
5. When particles aggregate together.
7. Type of emulsion with a size range of 5-50 nm.
10. A PIT emulsion is formed by ________ inversion.
11. This type of ingredient reduces the surface tension between two immiscible phases.
13. When two particles actually merge together to form a new entity.
14. Another name for a liquid-liquid dispersion.
17. A situation that occurs when there is insufficient coverage by surfactant on the droplet surface is known as the Gibbs-________ effect. As the two droplets come together this causes coalescence due the resulting interfacial tension gradient between the surface of adjacent droplets.
18. Person who is credited with inventing the HLB system.
19. The phase in which an emulsifier is more soluble is considered the continuous phase. This is known as________'s rule.
1. The ________-lipophile balance is a guideline that allows formulators to predict the hydrophilicity or lipophilicity of a molecule. It is based on a scale of 0 to 20, with 0 corresponding to the most lipophilic/hydrophobic compounds and 20 to the most hydrophilic/lipophobic materials.
2. A type of o/w emulsion stabilized with solid particles at the interface.
3. The temperature at which two phases are not soluble with one another is known as the ________ point.
4. Most emulsions are formed by ________ or condensation methods.
6. Type of emulsion with a size range of 50-200 nm.
8. When the dispersed phase becomes the continous phase and viceversa.
9. A phenomenon in w/o emulsions known as __________ ripening in which case oil molecules tend to migrate through the water phase to agglomerate with large lipid particles.
12. Oftentimes emulsion droplets cluster together in a process known as flocculation. It is a phenomenon that refers to the case when particles cluster together without actually merging. It is very common in o/w emulsions as the dispersed oil phase flocculates, and then rises to the surface, a process known as ________.
15. These types of particles are nanoparticles that have dual functionality in terms of their surface properties (e.g., it can have hydrophilic and lipophilic sections).
16. Another word for the dispersed phase.