Across |
3. |
______ LINE IS A SINGLE WAVELENGTH OF LIGHT GOING THROUGH A PRISM, GIVEN OFF BY AN EXCITED ELEMENT |
6. |
AN ATOM WITH AN ELECTRIC CHARGE |
7. |
THE CENTRAL PART OF THE ATOM THAT CONTAINS NEUTRONS AND PROTONS |
9. |
MOST MATTER ON EARTH IS MADE UP OF THESE PARTICLES |
11. |
THE LAW OF ______ THAT STATES THAT MATTER CAN NEITHER BE CREATED NOR DESTROYED |
12. |
ATOMS OF DIFFERENT ELEMENTS HAVE DIFFERENT _______ AND PROPERTIES |
15. |
MADE UP OF THE SAME TYPE OF ATOM |
16. |
THE SMALLEST PARTICLE IS A MOLECULE |
18. |
THE ELECTRON _____ IS THE PRESENT MODEL OF THE ATOM |
20. |
ATOMIC MASS UNIT |
21. |
DISCOVERED THE ELECTRON |
22. |
ATOMS OF DIFFERENT ELEMENTS COMBINE IN WHOLE-NUMBER ________ |