Chemistry

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Author:
cj8
ID:
283290
Filename:
Chemistry
Updated:
2014-09-16 21:16:20
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Chemistry
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Description:
Chemistry chapter 2 terms
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  1. The ability of a substance to undergo a specific chemical change
    Chemical property
  2. One or more substances change into one or more new substances
    Chemical reaction
  3. a substance present at the start of the reaction
    Reactant
  4. A substance produced in the reaction
    Product
  5. a solid that forms and settles out of a liquid mixture
    Precipitate
  6. States that any physical change or chemical reaction, mass is conserved
    Law of conservation of mass
  7. The simplest form of matter that has a unique set of properties
    Element
  8. A substance that contains two or more elements chemically combined in a fixed proportion
    Compound
  9. A change that produces matter with a diff composition than the original matter
    Chemical change
  10. Each element is represented by three which are in one or two letters
    Chemical symbol
  11. An arrangement of elements in which the elements are separated into groups based on a set of repeating properties
    Periodic table
  12. each vertical column of the periodic table; also called family
    Group
  13. Each horizontal row of the periodic table
    Period
  14. Physical blend of two or more components
    Mixture
  15. Another name for a homogeneous mixture
    Solution
  16. Used to describe only part of a sample with uniform composition and properties
    Phase
  17. Process that separates solid from a liquid in a hetero mixture
    Filtration
  18. A liquid is boiled to produce a vapor that is then condensed into a liquid
    Distillation
  19. He measure of the amount of matter the object contains
    Mass
  20. The measure of space occupied by the object
    Volume
  21. A property that depends on the amount of matter in a sample
    Extensive property
  22. A property that depends on the type of matter in a sample not the amount of matter
    Intensive property
  23. Matter that has a uniform and a definite composition
    Substance
  24. a quality or condition of a substance that can be observed or measured without changing the substances composition
    Physical property
  25. A form of matter that has a def shape and volume
    SolidSolid
  26. A form of matter that has an indef shape flows and has a fixed volume
    Liquid
  27. Form of matter that takes both the shape and volume of the container
    Gas
  28. Describes the gaseous state of a substance that is generally a liquid or a solid at room temp
    Vapor
  29. some props of material change but the composition of the material doesn't change
    Physical props
  30. Why do all samples of a substance have the same intensive props
    Bc every sample has the same composition
  31. Mass and volume r both exs of what props
    Extensive
  32. hardness color conductivity malleablility are exs of what prop
    Intensive
  33. what expands slightly when heated
    Liquid
  34. How can physical changes be classified
    Reversible or irreversible
  35. Boil freeze melt condense describe what change
    Physical
  36. How can mixtures be classified
    Homogeneous and heterogeneous
  37. How can mixtures be separated
    Diffs in physical props can be used to separate mixtures
  38. How are elements and compounds diff
    Compounds can be broken down but elements can't
  39. How can substances and mixtures be distinguished
    if the composition of a material is fixed the material is a substance but it the composition varies then the mixture is a mixture
  40. what in the chemical formula tells you how many of each type of element are in the compound
    subscript
  41. Why is a periodic table useful
    It allows you to easily compare the properties of one element or a group of elements to another element or a group of elements
  42. How many periods make up the periodic table
    7
  43. what always happened during a chemical change
    The composition of matter always changes
  44. What r 4 possible clues that a chemical change has taken place
    Colder or hotter color change gas precipitate
  45. Every chemical change involves what
    A transfer of energy
  46. A match that is burning is what type of change
    Chemical
  47. How r the mass and the products of a chemical reaction related
    theyre masses r always equal
  48. What is neither created nor destroyed
    Mass

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