5 Written questions
5 Matching questions
- What are ionic bonds?
- Do Hydrogen Bonds only occur with water molecules?
- What is a molecule?
- Define the potential energy level of electrons and the Kinetic energy level.
- How many electrons does it take to fill the first orbital shell? The second? The third?
- a No! Example: NH₃ (ammonia) is a hydrogen bond, the partial negative of Nitrogen bonds with the partial positive of Hydrogen.
- b Electron gaining or losing; e⁻ TRANSFER (NOT SHARING) between two atoms
- c Potential energy - stored energy due to location or structure; ready to use energy
Kinetic energy - energy in motion or movement; currently using
- d First shell - 2
Second shell - 8
Third shell - 8
- e 2 or more atoms held together by covalent bonds
5 Multiple choice questions
- Elements required by organisms in minute quantities; ex: humans need iodine in small quantities or we'll get goiter
- CHNOPS: Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur
- a substance consisting of two or more different elements combined in a fixed ratio.
- Compound is a mixture of at least two different elements, while a molecule is a 2 or more atoms of a single element.
- 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
5 True/False questions
What is matter? → Anything that takes up space and has mass. Ex: Air; something that isn't matter: light (think of the filling up a balloon metaphor)
What are valence electrons? → The electrons on the outermost orbital shell
Are Van der Waals interactions weak or strong? → The electrons on the outermost orbital shell
What is an ion? → Anything that takes up space and has mass. Ex: Air; something that isn't matter: light (think of the filling up a balloon metaphor)
What are covalent bonds? Single? Double? → The electrons on the outermost orbital shell