The formation of ice is called a physical change, why?

Name the element in group 17, period 2. (periodic table)

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.

Draw the lewis dot structure for each of the following polyatomic ions