5 Written questions
5 Matching questions
- What are isotopes?
- Are Van der Waals interactions weak or strong?
- What is a molecule?
- What is electronegativity?
- What are ionic bonds?
- a Weak.
- b 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
- c One atom's attraction of the electrons within one covalently bonded molecule
O > N > C > H
Oxygen - most electronegative element
- d 2 or more atoms held together by covalent bonds
- e Electron gaining or losing; e⁻ TRANSFER (NOT SHARING) between two atoms
5 Multiple choice questions
- Polar covalent bond.
(it's when there's more than one polar molecule that hydrogen bonding takes place)
- A substance that cannot be broken down to other substances by chemical reactions.
- The number of protons and neutrons in nucleus.
- CHNOPS: Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur
- Non-polar covalent bond; they have equal electronegativity so they share their e⁻
5 True/False questions
Difference between covalent and ionic bonds? → Compound is a mixture of at least two different elements, while a molecule is a 2 or more atoms of a single element.
What is the atomic number? → The number of protons and neutrons in nucleus.
Difference between an element and a compound? → Covalent bonds are the SHARING of electrons, whether it be equally or unequally
Ionic bonds are the GAINING or LOSING of electrons, NOT SHARING
What are valence electrons? → The electrons on the outermost orbital shell
Do Hydrogen Bonds only occur with water molecules? → No! Example: NH₃ (ammonia) is a hydrogen bond, the partial negative of Nitrogen bonds with the partial positive of Hydrogen.