Can atoms be counted or measured

1. If you were cooking _____– you would need 1 cup of rice and 2 cups of water. 2. This is the basic recipe for cooking rice. 3. If you wanted to cook _____ the amount of rice, you would use this recipe and multiply all ingredients by 2. Therefore adding 2 cups of rice and 4 cups of water. 4. This principle works in chemistry too. 5. ................
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