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Across 1. The electrons on the outer orbit of the atom 3. in atoms can act as our charge carrier 6. property of matter–just like mass, volume, or density. It is measurable 7. attract 15. the stuff that powers our electronic gadgets 17. one of the basic building blocks of life and matter 18. When the charges do find a means of equalizing 21. they prevent the flow of electrons 23. One of the most dramatic examples of static discharge 25. Elements with high conductivity, which have very mobile electrons 26. they are neutral, they have no charge 27. they are always positively charged 28. they carries a negative charge 29. repel

Down 2. it measures how tightly bound an electron is to an atom. 4. allow us to move charge, which is what electricity is all about 5. In order to move charge we need them 8. The count of protons 9. force that operates between charges 10. when there is a build-up of opposite charges on objects separated by an insulator 11. it's all around us–powering technology 12. they are used to create a controlled static discharge 13. the flow of electric charge 14. critical to the workings of electricity 16. Elements with low conductivity 19. it has 29 protons in its nucleus and an equal number of electrons orbiting around it 20. Minimum part of the meter 22. junction between two nerve cells 24. element with equal numbers of protons but different numbers of neutrons in their nuclei