Pre lab assignment describe the following trends in properties of chloride across period 3
(a)their formula
(b)their structure
(c)their base
(d)their volatility
(e) the PH of the aqueous chloride solution​

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.

d : a person who learns about the world by observing it. no that is not a smiley face

explanation: