Iwill rate brainliest!
of the following examples, select those that represent a chemical change.

i. water freezing and changing into ice
ii. leaves changing color in the fall
iii. mixing lemonade mix powder with water
iv. milk going sour

i believe that it is 2 and 4 but i am unsure

Astudent made the lewis dot diagram of a compound shown. what is the error in the lewis dot diagram? a)an o atom should transfer all of its six electrons to mg because the formula is mgo b) both electrons of mg should be transferred to one o adam because the formula is mgo c) the electrons should be transferred from each o add him to capital mg because mg has fewer electrons d) the number of dots around mg should be four because it has to transfer two electrons to each o

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal

In water, a strong acid will break down into its component parts. a. completely b. partly c. never in water, a weak base will break down into its component parts. a. completely b. partly c. never