Acids weaken some substances. bacteria in your mouth acts on sugar and produces acids. what would be the end result of this chemical reaction between your teeth and the acid produced?

An acid that is produced when some sugar particles are chemically reacted with bacteria present in our mouth this leads to demineralization.

Explanation:

Harmful bacteria in our mouth produce acids whenever they react with sugar content in your mouth. This results removal of minerals from our tooth enamel. This chemical reaction is called demineralization. Saliva neutralizes constantly acid in your mouth to protect your teeth. If you eat too much acidic food and drink and don't properly brush your teeth. The outer layer of enamel will be degraded over time if we consume more sugary, sticky foods and beverages.

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

d) physical means can be used to separate the components of air.