13. (18 points) Write a synthesis of compound J starting with 3-methylbutan-2-ol, acetylene (C2H2), formaldehyde (CH2O), and any reagents necessary.

chemical properties are the characteristic of matter which can only be observed by changing the chemical identity of a sample like flammability reactivity and toxicity.

false

because it does not have the potential to be entirely used up

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.