chemical.
Chemical property
Not being affected by acids is a chemical property. This property relates to how a substance reacts with other substances to form new products. In this case, a substance's resistance to being affected by acids is a result of its chemical composition and structure.
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Examples: valence (II or IV), soluble in acids and alkalis.
Gold is one metal that is not affected by most acids, including hydrochloric, sulfuric, and nitric acid. This is due to gold's inert nature and its resistance to chemical reactions with acids.
I wish i knew the answer sorry !!
yes
It is a physical change because the chemical composition id not affected.
During a physical change the chemical molecule is not affected; physical changes are changes of phase or form.
The formation of proteins from amino acids is considered a chemical change. This is because new chemical bonds are formed between the amino acids during the process of protein synthesis, resulting in a new chemical compound with unique properties (the protein).
This is a chemical change because the acids produced by bacteria in plaque are reacting with the minerals in the teeth, breaking them down and causing decay.