5 Written questions
5 Matching questions
- What is an element?
- What are isotopes?
- What is an ion?
- What is a compound?
- What are valence electrons?
- a Atoms that lose or gain electrons to complete their outer shell
- b The electrons on the outermost orbital shell
- 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 a substance consisting of two or more different elements combined in a fixed ratio.
- e A substance that cannot be broken down to other substances by chemical reactions.
5 Multiple choice questions
- The sharing of electrons EQUALLY; atoms have similar electronegativities
- The sharing of electrons UNEQUALLY; atoms have differing electronegativities
- Covalent bonds are the SHARING of electrons, whether it be equally or unequally
Ionic bonds are the GAINING or LOSING of electrons, NOT SHARING
- Potential energy - stored energy due to location or structure; ready to use energy
Kinetic energy - energy in motion or movement; currently using
- Electron gaining or losing; e⁻ TRANSFER (NOT SHARING) between two atoms
5 True/False questions
What bond do two oxygen's share? → The sharing of electrons UNEQUALLY; atoms have differing electronegativities
What is a hydrogen bond? Strong or weak? → Partial plus of a Hydrogen in a polar molecule forms a bond with a Partial Minus of another polar molecule; Weak bond.
What is a chemical bond? → a substance consisting of two or more different elements combined in a fixed ratio.
Do Hydrogen Bonds only occur with water molecules? → Compound is a mixture of at least two different elements, while a molecule is a 2 or more atoms of a single element.
What are the two strong chemical bonds? → Atoms interacting with each other to share, take, or give electrons.