Basic Chemistry Science Test

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Created by: sydney
  1. Pure substances that can't be broken down chemically into simpler kinds of matter
  2. Anything that takes up space and has mass
  3. reactions that absorb free engery
  4. simplest particle of an element that retains all properties of that element
  5. central core of an atom contains protons and neutrons
  6. speeds in which electrons move around the nucleus
  7. a pure substance that's made of atoms
  8. combining in a way that causes atoms to become stable
  9. when 2 atoms share 1 or more pairs of electrons
  10. simplest part of a substance htat retains all of the properties of the substance; exist in a free state
  11. when a postive and negative charge are attracted to eachother
  12. ability to do work
  13. energy in a system that is available to do work
  14. reduces that amount of energy needed to start a reaction
  15. reactions that release free energy
  16. important catlysts in living things
  17. when electrons go back and forth between atoms
  18. a reactant loses 1 more electrons and becomes positive in charge
  19. chemical substances that neutralize small amounts of an acid or base added to a solution; causes there not to be big swings in pH
  20. compares hydronium to hydroxide
  21. a reactant gains 1 or more electrons
  22. when there is more hydroxide than hyronium
  23. OH+
  24. when there is more hydronium than hydroxide
  25. H2O+
  26. solvent + solute
  27. part of the solution that does the dissolving
  28. part of the solution that gets dissolved
  29. the breaking apart of a molecule into two ions
  30. a solution in which water is hte solvent
  31. the amount of solute dissolved in a fixed amount of the solution
  32. no more solte can dissolve

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