1. What does the atomic number of an element represent?. # protons. 2. What is the atomic # of iron?. 26. 3. How many protons are in an iron atom?. 26. 4. What is the charge of the nucleus of an iron atom?. +26. 5. How many electrons are in an iron atom?. 26.
An atom of iron.
Iron has a higher atomic mass than carbon.
When liquid water evaporates it becomes a gas. The volume increases as gas molecules move farther apart.A. If volume increases due to evaporation, what happens to the density of the water?
It decreases (D = M/V)
Water evaporates as it is heated. It has a lower density (a gas), so it rises. Once it cools to its dew point the vapor condenses to form cloud droplets.
Mixture. It consists of water mixed with various salts.
Depends. If distilled and degasses it is a substance. Otherwise it is a mixture.