Question

Indicate whether each of the following statements refers to a (an): Ionic Bond Polar Covalent Bond Nonpolar Covalent Bond Single Covalent Bond Double Covalent Bond Triple Covalent Bond Hydrogen Bond

__________________1. electrons are shared unequally __________________2. two electrons (one pair) are shared between two atoms __________________3. attraction between an anion and cation __________________4. weakest bond listed __________________5. formed when electrons are transferred from one atom to another __________________6. easily broken by exposure to high temperature or extreme pH __________________7. results in molecules that have a slight negative charge at one end and a slight positive charge at the other end; e.g., N-H and O-H __________________8. holds the atoms of a water molecule together __________________9. holds adjacent water molecules together __________________10. electrons are shared equally __________________11. represented by dotted or dashed lines __________________12. formed between atoms with similar electronegativity __________________13. stabilizes the 3-D structure of large molecules such as proteins and DNA __________________14. results when 2 atoms sharing electrons differ significantly in electronegativity __________________15. two pairs of electrons are shared between two atoms __________________16. formed between two atoms of the same element

Answer 1

Ionic bods, covalent bonds and hydrogen bonds are the most common bonds. Ionic bond occurs due to transfer of electrons between two atoms with different electronegativities, and is the strongest of the three bonds.

Covalent bonds takes place via sharing of electrons. It can be polar if electrons are shared between atoms of slightly different electronegativity; and non-polar if electrons are shared between atoms of the same electronegativity. Also, covalent bonds can be single, double or triple, depending on the number of pairs of electrons shared.

Hydrogen bonds are created due to slightly positive and slightly negative ends of two molecules. It is the weakest bond amog the three.

1. electrons are shared unequally ___Polar covalent bond____

2. two electrons (one pair) are shared between two atoms _____single covalent bond____

3. attraction between an anion and cation _____Ionic Bond_____________

4. weakest bond listed _____Hydrogen bond_____________

5. formed when electrons are transferred from one atom to another ___Ionic bond_______________

6. easily broken by exposure to high temperature or extreme pH _____Hydrogen bond_____________

7. results in molecules that have a slight negative charge at one end and a slight positive charge at the other end; e.g., N-H and O-H _____Polar covalent bond_____________

8. holds the atoms of a water molecule together _____Polar covalent bond______

9. holds adjacent water molecules together _______Hydrogen bond___________

10. electrons are shared equally ______Non-Polar covalent bond_____

11. represented by dotted or dashed lines ____Hydrogen bond______________

12. formed between atoms with similar electronegativity _____Non-Polar covalent bond_____

13. stabilizes the 3-D structure of large molecules such as proteins and DNA ____Covalent bond_____

14. results when 2 atoms sharing electrons differ significantly in electronegativity ____Polar covalent bond__

15. two pairs of electrons are shared between two atoms ____Double covalent bond___

16. formed between two atoms of the same element ____Non-polar covalent bond______________