Chemistry

Card Set Information

Author:
Anonymous
ID:
169553
Filename:
Chemistry
Updated:
2012-09-08 00:50:44
Tags:
Science Chemistry
Folders:

Description:
Periodic Table, Electrons, Neutrons, Protons, Atomic Structure etc.
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Anonymous on FreezingBlue Flashcards. What would you like to do?


  1. Protons
    Positively charged ions
  2. Electrons
    Electron occupy the space around the outside of the nucleus

    Negatively charged ions
  3. Neutrons
    Uncharged ions
  4. Ions
    • Charged atoms.
    • Differ by number of electrons.
  5. Mass Number =
    Number Protons + Number of Neutrons
  6. Atomic Number
    The number of protons in the nucleus
  7. Perodic Table Box
    Example
  8. Elements are ...
    • The basic building blocks of all matter
    • They are substances which cannot be chemically decomposed any further
    • They are made up of only one type of atom
  9. Matter
    • It is made up of sub-microscopic particles called atoms
    • It makes up everything around us
    • Matter takes up space therefore it has volume which can be measured
    • Matter has mass and therefore can be weighed
  10. How are compounds formed?
    Compounds are formed when two or more elements are chemically combined
  11. Properties of Metals
    Metals are shiny, good conductors of electricity and heat, they are ductile (able to be drawn out into wire)
  12. Properties of Non-Metals
    Non-metals are poor conductors of heat and electricity, dull. 
  13. Properties of Metalloids
    Metalloids can be defined as those elements which exhibit characteristics of both metals and nonmetals. 
  14. Ionic Compounds
    Ionic compounds generally contain at least one metal and one non-metal that are chemically joined together in what is called a bond.
  15. What do metals form when they lose electrons?
    Metals form cations or positive ions when they “lose” electrons. As a result of this electron transfer a chemical bond is formed and an ionic compound is formed.
  16. What do non-metals form when they receive?
    Non-metals form anions when they receive electrons. As a result of this electron transfer a chemical bond is formed and an ionic compound is formed.
  17. What charge does an atom have?
    • In an atom there is always an equal number of protons and neutrons, so an atom has no overall charge.
    • Differ by number of protons.
  18. Valency
    The valency of an ion is the charge, positive or negative, which it has when it forms an ionic compound.
  19. Atomic Structure
    The nucleus of an atom is made up of protons and neutrons and is surrounded by electrons.
  20. Isotopes
    • Atoms of the same element with different mass numbers.
    • They differ by number of neutrons.
  21. Electron Configuration 
    - Number of electrons allowed in each shell
  22. Periodic Table - Group Number
    The group number corresponds to the number of electrons in the outer shell. Groups go down the periodic table.
  23. Periodic Table - Period Number
    The period number refers to the number of outermost shell containing electrons. Periods go across the periodic table.

What would you like to do?

Home > Flashcards > Print Preview