Across
- 4. fixed shape; variable volume
- 7. a base would turn red litmus paper _______
- 9. the most abundant gas in Earth's atmosphere
- 10. D = 50g/10Ml
- 11. any substance that is represented by an atomic symbol on the periodic table
- 12. anything that has mass and takes up space
- 13. the vertical lines of the periodic table
- 14. neutral or no charge particle
- 18. if the number of electrons in an element change, it is considered an __________
- 20. family with (Ca) Calcium in it
- 23. if an element has less electrons than it would in a neutral atom, the charge is ____________.
- 24. two or more elements combined in a set ratio that can only be separated by chemical means
- 27. the second most abundant gas in Earth's atmosphere
- 28. fixed volume; fixed shape
- 29. Density = Mass/__________
- 30. positively charged particle
Down
- 1. how many valence electrons does (He) Helium have?
- 2. 19 is (K) potassium's
- 3. this pH is considered to be neutral
- 5. bananas, pencils, chairs, and the earth all consist of_________
- 6. a match burning is considered a _________ change
- 8. negatively charged particle
- 13. the most metallic element on the periodic table
- 15. if an element has more electrons than it would in a neutral atom, the charge is ____________.
- 16. combined items that can be separated by physical means
- 17. cutting a person's hair is considered a _________ change
- 19. fixed volume; variable shape
- 21. if the number of neutrons in an atom change, it is considered an ___________ if that element
- 22. the horizontal lines of the periodic table
- 25. how much "stuff" is in something
- 26. how many neutrons in a neutral atom of (Li) Lithium Atomic Number 3?