States of Matter - 7th Grade

LB
by Leopoldo Busato Munhoz De Castro1 view·Updated Jul 29, 2020
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  1. Hello, Seventh readers.
  2. How are you doing?
  3. I hope you all had a very good vacation, and
  4. I am glad to have you guys back on our
  5. recorded son's class.
  6. So welcome, everyone.
  7. We are entering the third quarter off the year, and
  8. also we are about to start a new unit for
  9. more book, which is unit AIDS properties off matter.
  10. OK, but first we need to remember that there are
  11. different types of atoms, and all of them are Call
  12. it elements.
  13. The atoms off each elements have a different number off
  14. particles, and they are defined by the number off problems
  15. in its necklace.
  16. There are many different type of adults.
  17. Actually, scientists have discovered 94 different kinds of atoms that
  18. occur naturally in the universe, and we can find them
  19. all organized, hearing periodic table, the periodic table.
  20. It's organizing roles and columns.
  21. The roads are calling periods and the columns are calling
  22. groups. Elements in the same group share some common properties
  23. and elements.
  24. Properties is the topic that we're going to go over
  25. during this class.
  26. So let's start saying that all the matter around us
  27. can take on many different forms.
  28. Have many different properties and also can change between different
  29. states the air around us.
  30. It's a guess that we can easily move true.
  31. On the other hand, we cannot move through.
  32. Solid objects such as a wall, even matter in the
  33. same state can have very different properties.
  34. For example, solids may be brittle and fragile, like Gless,
  35. tough and bendable like metals are easily mounted, like what's
  36. the way materials behave is related to the behavior off
  37. their atoms and molecules.
  38. The different way in which they interact causes properties such
  39. as boiling points in melting points to defer.
  40. There is also a relationship between the properties off different
  41. materials and the way we use them.
  42. So going straight to the point, understand how matter behaves
  43. has bean from the mental wherever since humans first started
  44. to make things because if you stopped shooting, picking the
  45. materials with the most useful properties has helped us to
  46. build the civilization around us.
  47. For example, in the Amulet IQ period, early human societies
  48. use it storm to make twos, and today engineers have
  49. a huge variety of materials, which will use it to
  50. make twos, construct buildings and make useful devices just like
  51. our cell phones.
  52. Income Butte ER's, which are basically a bunch off different
  53. elements such as metals known metals metal.
  54. Lloyd's combining in different ways with the different properties but
  55. all working together inside the same device.
  56. Now let's talk a little bit about the state's off
  57. mayor. The matter around the stench for into one off
  58. three different categories called states off matter or faces the
  59. tree. Common states off matter are solids, liquids and guests.
  60. We can say that is the arrangement off the particles
  61. that will determine the properties off solids off the liquids
  62. and also gases properties right solids.
  63. Schalit's, for example, have a surface in a fix in
  64. shape. This is the cause.
  65. The molecules that make a solid are packet very close
  66. Together. The particles in solids are held firmly placed by
  67. forces of attraction.
  68. They can only vibrate and not move or change places.
  69. Liquids have a fixed volume in a definite surface.
  70. Whoever unlike solids, they did not have a fix it
  71. shape. Instead, they can flow and we'll feel the container
  72. they are in.
  73. This is just possible because the particles in liquids are
  74. held together by weaker forces of attraction and can move
  75. past each other.
  76. Right? Guesses are the third state of matter they keep.
  77. They can flow like liquids, but do not have a
  78. fix it volume and no definite surface.
  79. They take the shape off their container and expand to
  80. feel it.
  81. So the particles in a gas I'm not attracted to
  82. each other.
  83. They can move freely, right?
  84. So, guys, in conclusion, there are three common states off
  85. matter. However, some substance don't follow this patter.
  86. And we can say that in order situations, the matter
  87. can exist in his Arctic states.
  88. During our live checked, we will learn about some interesting,
  89. alas, common states off matter.
  90. Okay, so, guys, that's it for No.
  91. I wish you a Knauss, um, week and see you
  92. soon take very much for a time and bye bye.