001 structures of matter

  1. anything that has weight and takes up space is called?
    matter
  2. T/F
    is all matter composed of elements?
    true
  3. T/F
    Elements cannot be divided or reduced to a simpler substance by ordinary means
    true
  4. what are the two ways scientist can combine elements?
    compounds and mixtures
  5. what is the smallest part of a substance that has all the characteristics of that substance called?
    molecule
  6. individual elements that combine to form a molecule are called
    atoms
  7. electron theory states that atoms are composed of what 3 things
    • proton
    • neutrons
    • electrons
  8. what is the center of an atom called?
    nucleus
  9. what things are contained inside the nucleus?
    • protons
    • neutrons
  10. what carries a positive charge?
    protons
  11. what carries a neutral/no charge?
    neutrons
  12. what orbits around the nucleus?
    electrons
  13. what charge does a electron carry?
    negative
  14. atoms desire stability and will have an equal number of 
    _____ to _____
    protons to neutrons
  15. when the negative and positive charge is equal in an atom, the atom is considered to be_____
    balanced/ neutral
  16. what component of an atom enables the flow of electricity
    electrons
  17. electrons orbit around the nucleus in in rings called
    • shells 
    • energy levels
  18. what is the outer most shell of an atom called?
    valence shell
  19. electrons in the valence shell are called
    valence electrons
  20. what is one factor relating to electron shells that determines if a material is a good or bad conductor?
    how many electrons are in the valence shell
  21. what can be easily moved from one atom to another
    free electrons
  22. the movement of free electrons is what gives us electrical energy
    T/F
    True
  23. what is the maximum number of electrons that can be in the valence shell of an atom
    8
  24. a stable atom has how many valence electrons
    8
  25. T/F
    it is easy to remove electrons from a atom that has 8 valence electrons
    False
Author
daniel.ramos702
ID
351967
Card Set
001 structures of matter
Description
001 structures of matter
Updated