For example, a cryptic crossword on the back page of the Daily Telegraph on 14 March 2012 included the answer. , whose clue was Close study of broken nails, say (8): say in cryptic crossword clues normally means a word pronounced the same as or for example, but here it is part of an anagram.ost cryptic crosswords provide the number of letters in the answer, or in the case of phrases, a series of numbers to denote the letters in each word: cryptic crossword would be clued with (7,9) following the clue. More advanced puzzles may drop this portion of the clue.
In this chemistry lab, students will conduct a controlled experiment resulting in the growth of salt crystals. They will use their skills of observation to document what goes into the experiment and what comes out, and what they have learned of physical and chemical changes to explain the results.
Other commonly held views are that chemical changes are caused by the mixing of substances/reactants or that heat (which is considered to be some form of material) has to be added. 1  Scientific view. In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. The distinction between physical and chemical change is not clear cut. Frequently students are led to believe that a change is either physical or chemical. In fact this should be considered more of a continuum.