MATTER AROUND US
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Check
Across:
1.
a symbolic representation of one molecule of an element or a compound
4.
Change in state from solid to liquid
5.
Change in state from liquid to solid
6.
The small number beside the symbol in chemical formula which tells us the number of atoms of that element present in the molecule.
Down:
1.
Change in state from vapour to liquid
2.
total number of atoms present in one molecule of an element, compound or a substance
3.
1 atom of Nitrogen and 3 atoms of Hydrogen forms
7.
Scientist who suggested that the symbols of elements be made from one or two letters of the name of the element.
OK