Osvaldo Eduardo Science nov 2014

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LucyAnkleAnchor
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288817
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Osvaldo Eduardo Science nov 2014
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2014-11-19 18:14:49
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Osvaldo Science nov 2014
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Osvaldo Science nov 2014
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  1. What is chemistry?
    The study of matter and its changes .
  2. What is matter made up of?
    Atoms which can combine together to form molecules.
  3. What state of matter is water?
    liquid.
  4. chemical or physical change:

    Ashes can be the result of paper reacting with fire.   

    Ashes -= ceniza
    CHEMICAL
  5. CHEMICAL OR PHYSICAL CHANGE:
    Gold is a solid metal. It is malleable and it is used to make jewelry.
    Physical .
  6. Chemical or physical change:

    blending eggs, oil and lemon is delicious. these ingredients react and the outcome is mayonnaise
    chemical .
  7. What is a heterogeneous mixture?
    A heterogeneous mixture is one that consists of two or more substances. It is non-uniform and the different components of the mixture can be seen.

    chocolate chip cookies.

    water and oil.
  8. What is a homogeneous mixture?
    A mixture which has uniform composition and properties throughout.

    For example, air is a homogeneous mixture of gases.

    A teaspoonful of table salt stirred into a glass of water also makes a homogeneous mixture.
  9. Heterogeneous or homogeneous?

    Mayonnaise?
    homogeneous
  10. Heterogeneous or homogeneous?

    chocolate milk shake
    homogeneous
  11. Heterogeneous or homogeneous?

    stew - (picadillo)
    Heterogeneous
  12. Heterogeneous or homogeneous?
    gallo pinto
    heterogeneous
  13. Heterogeneous or homogeneous?

    ice tea
    homogeneous
  14. Heterogeneous or homogeneous?
    azteca soup
    Heterogeneous
  15. Heterogeneous or homogeneous?

    Rice with chicken
    Heterogeneous
  16. Heterogeneous or homogeneous?

    coke
    homogeneous
  17. Heterogeneous or homogeneous?

    potato salad
    Heterogeneous
  18. Heterogeneous or homogeneous?

    milk
    homogeneous
  19. Heterogeneous or homogeneous?

    lemonade
    homogeneous
  20. How are the elements arranged in the periodic table?
    In order of increasing atomic number.
  21. What are the columns called in the periodic table?  what do they have in common?
    Groups.

    they contain elements with similar physical and chemical properties.
  22. The elements can be separated into metals, ________ and ________.
    Metals, non-metals and metalloids.
  23. The elements can be separated into main-group elements and _________ elements.
    The elements can be separated into main-group elements and transition elements.

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