crossword
Crossword
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:
2.
...................... provided the basic theory about the nature of matter.
4.
In a chemical substance the elements are always present in definite proportions by..................
5.
Atoms combine in the ratio of small whole numbers to form .............
Down:
1.
All matter is made of very tiny particles called ..............
3.
Atoms are indivisible particles, which cannot be created or ........................... in a chemical reaction
OK