Physical change, it is because no new substances are formed
Explanation:
Foods and beverages that are high in acids wear away the enamel that protects your teeth, a process known as tooth erosion. This changes the appearance of your teeth and opens the door for bacteria that can cause cavities or infection.
You can reduce tooth erosion from what you eat and drink by following these tips: Wait an hour before you brush after eating acidic foods to give your saliva a chance to naturally wash away acids and re-harden your enamel. Limit – or avoid – acidic beverages like soft drinks. If you do indulge, use a straw.
hope this helps you.
The answer to the question
A given compound is composed of atoms that combine in a definite proportion or ratio. A chemical formula is a way of representing the combination of different atoms and provides information about the number of atoms present in the molecule.
The given compound adrenaline contains:
13 hydrogen (H) atoms
9 carbon (C) atoms
3 oxygen (O) atoms
1 nitrogen (N) atoms
Hence the chemical formula of adrenaline is:
![C_{9} H_{13} O_{3}N](https://tex.z-dn.net/?f=C_%7B9%7D%20H_%7B13%7D%20O_%7B3%7DN)
No it does not, density is the ratio of the mass of an object to its volume.