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1.1-1.2 Study Question Answers

1.1-1.2 Study Question Answers. Chemistry. 1.1. Photosynthesis Equation was CO 2 + H 2 O  C 6 H 12 O 6 + O 2. 2. Sucrose (or table sugar), carbon dioxide, and water. 3. Artificial sweeteners or synthetic fibers.

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1.1-1.2 Study Question Answers

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  1. 1.1-1.2 Study Question Answers Chemistry

  2. 1.1 • Photosynthesis Equation was CO2 + H2O  C6H12O6 + O2

  3. 2. Sucrose (or table sugar), carbon dioxide, and water

  4. 3. Artificial sweeteners or synthetic fibers

  5. 4. Basic research is carried out for the sake of increasing knowledge whereas applied research is carried out to solve a problem.

  6. 1.2 1. Has mass and takes up space

  7. 2. An atom

  8. 3. Elements, element

  9. 4. carbon, oxygen, hydrogen

  10. 5. compound

  11. 6. Water (H2O) and carbon dioxide (CO2)

  12. 7. Extensive properties depend on the amount of matter present whereas intensive properties are the same regardless of how much of the substance is present.

  13. 8. volume, mass, and amount of energy in a substance

  14. 9. Melting point, boiling point, density, and ability to conduct electricity Also: ability to conduct heat

  15. 10. A physical property is a characteristic that can be observed or measured without changing the identity of the substance whereas a chemical property is observed when the substance undergoes changes that transform it into a different substance.

  16. 11. Melting point and boiling point

  17. 12. Ability to burn (combustibility, flammability), ability to rust, and ability to tarnish

  18. 13. A physical change does not involve a change in the identity of the substance whereas in a chemical change one or more substances are converted into different substances.

  19. 14. grinding, cutting, melting, and boiling

  20. 15. Changes of state such as melting and boiling

  21. 4 states of matter 16. Solid has a definite shape and a definite volume Liquidhas a definite volume but an indefinite shape Gashas neither a definite shape nor a definite volume Plasmaa high temperature physical state of matter in which atoms lose most of their electrons

  22. 17. Solids particles are held together by strong attractive forces and vibrate about fixed points Liquids particles in a liquid move more rapidly than in a solid, overcoming the strong attractive forces between them and allowing the liquid to flow Gases particles move very rapidly and are at great distances from one another; the attractive forces between gas particles have less of an effect than in liquids and solids

  23. 18. Chemical reactions

  24. Reactant Reactant Product carbon + oxygen  carbon dioxide

  25. 20. yields

  26. 21. Although energy can be absorbed or released in a change, it is not destroyed or created. It simply assumes a different form.

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