Nicholas used a chemical that holds a lot of water. What property of water makes it effective in protecting firefighters? https://www. sciencenewsforstudents. org/blog/eureka-lab/teen-invents-be tter-tent-beat-fires-heat
The article ^^

The chemical reactions lab we did is typically called a "copper plating lab,  because the acid solution cleaned the pennies and made the copper look shinier;   the acid solution cleaned the paperclips and made them look like pennies;   &   the copper from the pennies was removed, and then added to the paperclips.