Across
- 2. two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.
- 4. Number that is shown on the bottom of an element shown on the periodic table
- 9. a given chemical compound always contains its component elements in fixed ratio
- 10. You can find an electron in the____
Down
- 1. piece of an atom with a positive charge
- 3. part of an atom with a negative charge
- 5. for any system closed to all transfers of matter and energy, the mass of the system must remain constant
- 6. part of an atom with no charge
- 7. What number shows the amount of protons in an element
- 8. smallest form of matter