Across
- 2. - a membrane-bound organelle that contains genetic material (DNA) of eukaryotic organisms.
- 4. - accompanied by or requiring the absorption of heat.
- 9. - a organized chart of all the elements.
- 12. - is the phase transition in which gas transforms into solid without passing through the liquid phase
- 14. - the process of separating the components or substances from a liquid mixture by using selective boiling and condensation.
- 17. - the medieval forerunner of chemistry, based on the supposed transformation of matter. It was concerned particularly with attempts to convert base metals into gold or to find a universal elixir
- 20. - a property that describes a substances ability to participate in chemical reaction.
- 22. – a compound that lacks carbon-hydrogen bond
- 24. - a branch of chemistry that deals with the study of chemical processes that occur inside of living organisms.
- 25. - the mass of an atom of a chemical element expressed in atomic mass units.
- 26. - 2 or more substances compound physically in variable proponents.
- 28. – is the science of obtaining, processing, and communicating information about the composition and structure of matter.
- 30. - it has a definite shape and a definite volume.
- 35. - composed of 2 or more atom.
- 36. - is an atom or molecule that has a net electrical charge
- 38. - a negatively charged ion
- 39. - is known as the originator of the quantum theory of energy.
- 43. - uniterm in composition.
- 46. - is the change of the physical state of matter from the gas phase into the liquid phase
- 47. - is any process which requires or absorbs energy from its surroundings, usually in the form of heat
- 49. - the process or effect of simplifying a single chemical entity into two or more fragments
Down
- 1. - it has indefinite shape and a definite volume, takes shape of a container.
- 3. - is the study of matter, its properties, how and why substances combine or separate to form other substances, and how substances interact with energy.
- 5. - type of matter and the way matter is arranged.
- 6. - the natural science that studies matter, its motion and behavior through space and time, and the related entities of energy and force.
- 7. - the smallest constituent unit of ordinary matter that constitutes a chemical element.
- 8. – is the separation of a mixture by passing it in solution or suspension or as a vapor (as in gas chromatography) through a medium in which the components move at different rates.
- 10. - chemical element is the number of protons found in the nucleus of every atom of that element
- 11. - the ability of a chemical to burn or ignite, causing fire combustion.
- 13. - is the conversion of one chemical element or isotope into another.
- 15. – it alters the composition of the original matter
- 16. - is a form of matter in which many of the electrons wander around freely among the nuclei of the atoms.
- 18. – a compound that contains carbon-hydrogen bond
- 19. – the one who developed the periodic table
- 21. - is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase.
- 23. - A state of matter that have an indefinite shape and indefinite volume.
- 27. - significant rule non-zero digits are always
- 29. – is one of the most important part of Physical chemistry
- 31. - is a phase transition in which a liquid turns into a solid when its temperature is lowered to or below its freezing point
- 32. - is the transition of a substance directly from the solid to the gas state, without passing through the liquid state
- 33. – discovered the Polonium and Radium
- 34. - is an experimental gas law relating the volume of a gas to the amount of substance of gas present.
- 37. - a chemical reaction that releases energy.
- 40. - who put the pieces of the puzzle together and developed an atomic theory in 1803
- 41. - a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions
- 42. - a subatomic particle, with a positive electric charge.
- 44. - a subatomic particle, with a negative electric charge
- 45. - Any substance that has mass and takes up space.
- 48. - a positively charged ion
- 50. – an expert in chemistry