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:
1.
The .................... unit mass of a substance is a sum of the atomic masses of all atoms in a formula unit of a compound
3.
The chemical formula of a molecular compound is determined by the .................... of each element
5.
The ................... constant 6.022 × 1023 is defined as the number of atoms in exactly 12 g of carbon-12
Down:
2.
Mass of 1 mole of a substance is called its..................
4.
Clusters of atoms that act as an ion are called ................. ions
OK