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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Across: 2. Change in state from liquid to vapour 3. The particles move slightly further apart from one another.This causes the volume of matter to increase.This process is called _____ 5. The graphite refill used in pencil is made up of this element 6. the first scientist to use the symbols for elements in a very specific sense 8. Represented by Fe
Down: 1. a pure substance that is formed when the atoms of two or more elements 4. the three most abundant atom on Earth are iron,oxygen, and _____ 7. substance that is made up of three oxygen atoms chemically combined