Across
- 3. electrostatic attraction that forms between atoms when they share or transfer valence electron
- 6. any change in matter that does not alter its chemical or nuclear composition
- 10. a particle consisting of two or more atoms covalently bonded together
- 11. the total number of particles found in the nucleus of a particular isotope of an element
- 14. a row in the periodic table of elements
- 16. region within an atom where an electron will most probably be located (quantum mechanical model)
- 18. a measure of an elements ability to attract and hold electrons when bonded to other atoms
- 21. an atom with balanced electrical charges
- 25. the space enclosed or occupied by an object
- 26. the change in state directly from a gas to a solid without condensing first
- 29. a charged atom or group of atoms that has gained or lost electrons, producing an unequal number of protons and electrons
- 30. the force of gravity acting on the matter in an object
- 31. the change of state from a liquid to a solid
- 32. the circular path of an electron around the nucleus (Bohr model)
- 34. the building block of all matter
- 36. a positively charged ion
- 38. the attraction between atoms and their collectively shared valence electrons
- 42. the chemical property indicating to what degree a material reacts with another substance
- 44. a subatomic particle found in the nucleus of an atoms and having a positive charge
- 45. a column of elements in the periodic table having similar valence electrons arrangement
- 46. the distance from the center of an atoms nucleus to its outermost energy level
- 47. a chemical bond formed when an atom transfers valence electrons
Down
- 1. the change of state from a liquid to a gas
- 2. anything that has mass and occupies space
- 4. the relativity fast form of vaporization
- 5. a physical combination of two or more substances in a changeable ratio
- 7. a pure substance that consists of atom is with the same atomic number
- 8. a property of a substance that describes how its chemical identity changes in the presence of another substance or under certain conditions
- 9. an atom of an element that has a different number of neutrons than other atoms of that element
- 12. the change in state directly from a solid to a gas without melting first
- 13. a mixture that does not have a uniform appearance since the combined substances are unevenly distributed
- 15. the minimum amount of energy required to remove the first electron from the outermost shell of a neutral atom
- 17. an electron in the outermost energy level of a neutral atom
- 19. a chemical bond formed as a result of two atoms sharing valence electrons
- 20. the relatively slow form of vaporization
- 21. a subatomic particle found in the nucleus of most atoms that has no electrical charge
- 22. the mass of an atom expressed in atomic mass units; the weighted average of all the masses of the naturally occurring isotopes
- 23. a mixture that has a uniform appearance throughout
- 24. anything about a substance that can be observed or measured without altering its chemical composition
- 27. the mass per unit volume of an object
- 28. the unique number of protons found in every atom of a particular element
- 33. the change of state from a gas to a liquid
- 35. the change of state from a solid to a liquid
- 36. a pure substance consisting of atoms of two or more elements that are chemically combined in a fixed ratio
- 37. converting between units by multiplying a fraction
- 39. the smallest of the main subatomic particles found outside the nucleus with a negative charge
- 40. moving the decimal left to right to convert between units
- 41. the unequal distribution of electric charge in a covalent bond
- 43. a change that alters the chemical composition of a substance
- 46. a negatively charged ion