Forming covalent bonds

12 questions

1. Why do atoms form chemical bonds?
2. Which type of bond forms between atoms that have transferred electrons from one atom to another?
3. What type of elements typically form ionic bonds?
4. How many outer-shell electrons does an oxygen atom have?
5. A ___ is a particle consisting of two or more non-metal atoms bonded together. It can be made up of the same or different elements.
6. Arrange the following molecules by the number of covalent bonds each has, from least to most:
7. What is a covalent bond?
8. How many covalent bonds will an atom form if it needs three electrons to complete its outer shell?
9. What does a displayed formula of a covalent substance show?
10. What is the purpose of a dot and cross diagram?
11. A ___ is a particle consisting of a fixed number of non-metal atoms covalently bonded together.
12. Atoms can share multiple pairs of electrons to achieve full outer shells, leading to double or ___ covalent bonds.

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