CHEMISTRY

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Across
  1. 1. -uniterm in composition.
  2. 4. – a positively charged ion.
  3. 6. – 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.
  4. 7. – a property that describes a substances ability to participate in chemical reaction.
  5. 9. -it is when a substances react with each other and form one or more new substances.
  6. 10. – a chemical reaction that releases energy.
  7. 11. composed of 2 or more atom.
  8. 13. – it has a definite shape and a definite volume.
  9. 18. - is a form of matter in which many of the electrons wander around freely among the nuclei of the atoms.
  10. 20. – A zero that does not count as significant figures.
  11. 23. property -a matter that can be observed without changing the matter’s identity.
  12. 25. – the degree to which a chemical substance or a particular mixture of substance can damage an organism.
  13. 27. – Any substance that has mass and takes up space.
  14. 28. – a zero that always counts as a significant figure.
  15. 30. the mass of an atom.
  16. 35. – substance that is dissolved or scattered and dispersing medium.
  17. 38. – refers to the agreement of a particular value with the true value.
  18. 40. – accompanied by or requiring the absorption of heat.
  19. 42. -type of matter and the way matter is arranged.
  20. 44. a negatively charged ion.
  21. 45. - a method in which two or more components of different sizes are separated from a mixture on the basis of the difference in their sizes.
  22. 46. the number of protons and the number of neutrons determine an element's mass number.
  23. 47. - is the method in which heavier components of the mixture are separated from the lighter substances with the help of wind.
  24. 48. - the ability of a chemical to burn or ignite, causing fire combustion.
  25. 49. – a branch of chemistry that deals with the study of compounds that are not covered by organic chemistry.
  26. 50. – a zero that are only significant if the number contains a decimal point.
Down
  1. 2. – A type of error that occurs in the same direction each time. Often resulting from poor technique.
  2. 3. – a branch of chemistry that deals with the study of chemical processes that occur inside of living organisms.
  3. 5. – it has indefinite shape and a definite volume, takes shape of a container.
  4. 8. TABLE – a organized chart of all the elements.
  5. 12. - is an effective method to separate mixtures comprised of two or more pure liquids.
  6. 14. – a branch of chemistry which deals with the study of compounds that contain the element carbon and hydrogen.
  7. 15. – the mass per unit volume of a substance.
  8. 16. – is when a substance goes from gas to solid.
  9. 17. – the ability of a substance to be pulled into a wire.
  10. 19. – the ability of a substance to be rolled or pounded into thin sheets
  11. 21. – a branch of chemistry that deals with the study of separation, identification, and quantification of chemical components of natural and artificial materials.
  12. 22. definite composition.
  13. 24. – type of chemical bonding wherein it involves the electrostatic attraction between oppositely charged ions.
  14. 26. – consist of coarse particles which are visible to the naked eye
  15. 29. – A state of matter that have an indefinite shape and indefinite volume.
  16. 31. – 2 or more substances compound physically in variable proponents.
  17. 32. – the transition of substance directly from the solid to the gas state.
  18. 33. - a technique used to separate out homogenous mixtures where there is one or more dissolved solids.
  19. 34. - separation method used to separate out pure substances in mixtures comprised of particles some of which are large enough in size to be captured with a porous material.
  20. 36. -the ability of a substance to dissolve in another substance.
  21. 37. – A branch of chemistry that deals with the study of physics and math.
  22. 39. -the ability of two or more substances to chemical combine and form one more new substances.
  23. 40. – composed of an atom.
  24. 41. - branch of science that deals with the identification of the substances of which matter is composed.
  25. 43. – a type of error wherein the measurement has an equal probability of being high or low.