5 Written questions
5 Matching questions
- What are valence electrons?
- What is the atomic mass?
- What is a chemical bond?
- What are non-polar covalent bonds?
- What is an ion?
- a The number of protons and neutrons in nucleus.
- b Atoms that lose or gain electrons to complete their outer shell
- c The electrons on the outermost orbital shell
- d The sharing of electrons EQUALLY; atoms have similar electronegativities
- e Atoms interacting with each other to share, take, or give electrons.
5 Multiple choice questions
- Compound is a mixture of at least two different elements, while a molecule is a 2 or more atoms of a single element.
- CHNOPS: Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur
- Non-polar covalent bond; they have equal electronegativity so they share their e⁻
- Covalent bonds (STRONGEST) and Ionic bonds.
- Two or more atoms SHARING ELECTRONS.
Single covalent bonds - sharing of one pair of valence electrons
Double - sharing of two pairs of valence electrons
5 True/False questions
What is the atomic number? → The number of protons and neutrons in nucleus.
Difference between covalent and ionic bonds? → 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 polar covalent bonds? → The sharing of electrons UNEQUALLY; atoms have differing electronegativities
What is an element? → A substance that cannot be broken down to other substances by chemical reactions.
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