Describe two physical and two chemical changes involved in cooking. (4 points)

A physical change can be melting of solid things such as turning butter into liquid, or boiling liquid such as water, while a chemical change can be releasing carbon dioxide when making bread or caramelizing sugar when making sweets.

Forgot the question hahaha

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom