Across
- 3. That group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance called?
- 4. What kind of properties that can be measured or observed without changing the chemical nature of the substance?
- 7. What kind of mixture whose composition varies from one position to another within the sample?
- 11. What neutral particles found in the middle of the atom?
- 13. What chemical reaction that is accompanied by the absorption of heat?
- 16. What elements that readily forms positive ions (cations) and has metallic bonds?
- 17. When gas turns to solid, this called what?
- 18. What are the basic units of matter?
- 21. What element that doesn’t have the characteristics of metal?
- 22. When liquid turns to gas, this called what?
- 24. What element that exhibits some properties of metals and some non-metals?
- 27. What kind of chemical compound that lacks carbon-hydrogen bonds?
- 30. What simplest form of matter that has composed of only one kind of atom?
- 33. What chemical reaction that is accompanied by the releases energy through light or heat?
- 34. When Protons and Neutrons combine is called what?
- 38. What kind of mixture that has to compose of a solute or dissolved substance and solvent for dissolving medium?
- 39. What kind of properties that must lead to a change in the substance’s structure?
- 41. That number digits have carry meaning in a number and contribute to its precision is called?
- 42. When complete loss the electron from an atomic or molecular species is called?
- 44. When measure an object or substance to tell if hot or cold is called what?
- 45. What kind of heterogeneous mixture that contains solid particles sufficiently large for sedimentation?
- 47. That science that deals with the composition, structure, and properties of substances and with the transformations that they undergo is called?
- 48. When solid turns to gas, this called what?
Down
- 1. What kind atoms have too many neutrons in the nucleus, which makes them unstable?
- 2. What the amount of space occupied by a substance?
- 4. That tabular arrangement of the chemical elements by increasing atomic number which displays the elements called?
- 5. What kind of chemical compound that contains carbon?
- 6. That composed of two or more substances combined physically in variable proportions is called what?
- 8. When matter that has definite composition and distinct properties called?
- 9. That contains two or more kinds of atom is called?
- 10. That elements have odorless, colorless, monatomic gases with very low chemical reactivity is called what?
- 12. What part of atom that have a negative charge?
- 14. When liquid turns to solid, this called what?
- 15. Who discovered the oxygen?
- 19. When solid turns to liquid, this called what?
- 20. What matter that adapts to the shape of its container but varies only slightly in volume?
- 23. When measure of the amount of matter in a substance or object is called what?
- 25. The mass of a substance per unit volume is called?
- 26. That anything that occupies space and has mass called?
- 28. What matter that have many electrons wander around freely among the nuclei of the atoms?
- 29. When gas turns to liquid, this called what?
- 31. what kind of chemistry study that matter and the development of tools to measure properties of matter?
- 32. What kind of chemistry study that applies physics and commonly includes the applications of thermodynamics and quantum mechanics to chemistry?
- 35. Who coined term atomos and now we know as an atom?
- 36. When property referring to the ability for a given substance, the solute, to dissolve in a solvent is called?
- 37. What part of atom that have a positive charge?
- 39. What kind of heterogeneous mixture that substance is dissolved or scattered and disappearing medium?
- 40. What kind of atom that have a different number of neutrons, but are otherwise the same?
- 43. What matter that expands to occupy the volume and shape of its container?
- 46. What matter that maintains a fixed volume and shape?