Across
- 1. I can be either heterogeneous or homogeneous.
- 5. I am the heaviest alkaline earth metal.
- 6. Electrons furthest from the nucleus that are responsible for interactions of atoms with one another also referred to as _________ electrons.
- 9. Substance that contains more than one element.
- 10. I am one of the noble gases.
- 12. Arsenic is an example of this type of element.
- 13. Members of Group 17 (or VIIA) are called _______.
- 15. A combination of two or more atoms held together in a specific shape by attractive forces.
- 18. Two forms of the same element that contain same number of protons but different number of neutrons.
- 21. The number of _______ gives the identity of an element.
- 23. You can find me in Group 1 of the periodic table and in table salt.
- 24. I am a transition metal with 47 electrons used to make photographic film.
- 25. These types of elements are malleable, ductile and conduct electricity.
- 26. I have definite shape and volume.
- 27. Another name for a column of the periodic table.
Down
- 2. I am negatively charged and barely contribute to the mass of the atom.
- 3. I take the shape of the container I am in.
- 4. My atomic mass is 63.546 amu.
- 7. My atomic number is 7.
- 8. Protons, neutrons and electrons are classified as ________ particles.
- 11. I am the positively charged center of an atom.
- 14. If phosphorus gains 1 proton it turns into this element.
- 16. I am made up of hydrogen and oxygen atoms and you need me to live.
- 17. An atom that has gained or lost one or more electrons.
- 19. Another name for a row of the periodic table.
- 20. Elemental symbol for tin.
- 22. I have no charge and you can find me at the center of an atom.