Across
- 4. when it is brittle is is inflexible
- 7. a solid that is malleable and ductile
- 11. number protons and neutrons present in the nucleus of an atom
- 12. a combination of substnces
- 13. the neutral charge in an atom
- 14. test the test for hydrogen gas that is known as a pop test
- 15. it can bend
- 17. of electricity materials that allows flow of charge in one or mor direction
- 19. two or more types of atoms joined
- 20. very light negatively charged particles in an atom
Down
- 1. able to be drawn out into wires
- 2. tiny but heavy particle found in the nucleus
- 3. substances made up of two or more different types of atoms
- 5. pure substances made up of only one type of atom
- 6. very small particles that make up all things
- 8. when something is lustrous it is shiny
- 9. number the number of what the element is on the periodic table
- 10. an element whose properties are intermediate
- 16. metal a chemical element that lacks characteristics of metal
- 18. the central part of an atom