PVAc is a widely used adhesive for porous materials like wood and paper. Discovered in Germany in 1912 by Fritz Klatte. Contains ester groups that convert to polyvinyl alcohol and acetic acid. Glass transition temperature ranges from 30 to 45°C
Kinder Surprise is a milk chocolate egg with a yellow plastic capsule containing a toy. Created by Michele Ferrero and William Salice in 1974. Contains two layers: milk chocolate outside and white chocolate inside. Features warning labels for children under three years old
MSM is produced by forcing meat through sieve under high pressure. Process separates bone from edible meat tissue. Used in hot dogs and bologna since late 1960s
Silicon dioxide exists as amorphous and crystalline forms. Amorphous type commonly found in food products. Crystalline type common in nature and industrial production
Fresh eggs sink to bottom on side, float, or stand upright. Fresh eggs make minimal sloshing sound when shaken. Cloudy white indicates freshness, clear white means aging. Egg should be compact and spread-free
FAO Food Price Index averaged 128.8 points in September 2025. Index was 3.4% higher than September 2024 but 19.6% below March 2022 peak