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Down group 1 the elements are more reactive. This because the size of the atom gets larger and the outermost electron feels less attraction to the nucleus.

s=((u+v)/2)t1000=((10+22)/2)t1000=(16)tt= 62.5s

Responses would be subjective and could be as creative as the student liked, but could include points such as: where they went/ how long for/ who with, weather/ tourist spots/ food, description of transpo...

The patient is injected with a radioactive isotope with short half-life, for eg Fluorine-18. This isotope decays into positrons. The area damaged with tumour requires more blood supply compared to the hea...

An acid can be described as strong and dilute because the strength of the acid is determined by what proportion of the acid dissociates in water, and it can be described as dilute depending on how much of...