Question 17 braiding and cutting hair are both examples of physical changes. true false 2 points question 18 if you were to take several random samples from a mixture of salt and sand, the samples would: be identical no matter where in the mixture they were taken from be identical as long as the samples were taken at the same time be identical as long as the samples were the same size not be identical

Question 17:

False; cutting hair would change what it looks like but, braiding it keeps it the same substance it is.

Question 18 :

My best guess would either be A or D. I would lean more towards D because if there are different mixtures then it depends on what you are mixing.

Hope it helps in some way. <3

the answer is 303.15 or 303

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.