5 Written questions
5 Matching questions
- What are isotopes?
- What is a molecule?
- What are polar covalent bonds?
- How many electrons does it take to fill the first orbital shell? The second? The third?
- What is the atomic number?
- a The number of protons in an atom.
- b 2 or more atoms held together by covalent bonds
- c Different forms of the same element; they differ in number of neutrons, but they have the same # of protons and behave identically in chemical reactions
- d First shell - 2
Second shell - 8
Third shell - 8
- e The sharing of electrons UNEQUALLY; atoms have differing electronegativities
5 Multiple choice questions
- CHNOPS: Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur
- Electron gaining or losing; e⁻ TRANSFER (NOT SHARING) between two atoms
- Atoms that lose or gain electrons to complete their outer shell
- The electrons on the outermost orbital shell
- Partial plus of a Hydrogen in a polar molecule forms a bond with a Partial Minus of another polar molecule; Weak bond.
5 True/False questions
What is the atomic mass? → The number of protons in an atom.
Choose 2 elements essential to life, draw the electron configuration of each as an ion and note the charge of the ion. → Ex: O - only 6 rings on outer shell, so it wants to gain 2, making it 2- charge
What is a chemical reaction? Be able to identify the products and reactants in a chemical reaction. → Atoms interacting with each other to share, take, or give electrons.
What are non-polar covalent bonds? → The sharing of electrons UNEQUALLY; atoms have differing electronegativities
What are covalent bonds? Single? Double? → Two or more atoms SHARING ELECTRONS.
Single covalent bonds - sharing of one pair of valence electrons
Double - sharing of two pairs of valence electrons