Chapter 2 review

If an organic molecule has both cis and trans isomers, that molecule must have what?

• hydrogen saturation

• a double bond

• an uneven number of neutrons

• lost or gained an electron

Answer explanation

Neon has an atomic number of 10. From this you can assume that a neutral atom of neon has

• 10 electrons

• 10 protons

• 10 neutrons

• all are true of neon

What do you call an atom that has lost an electron?

This is an atom of Lithium. It has an atomic number of 3. What type of chemical bond is Lithium most likely to make?

• It will give up its electron and become a noble gas

• It will share its electron and form a covalent bond

• It will give up its electron and form an ionic bond

• It will accept an electron and form a covalent bond

Carbon has an atomic number of 6. how many neutrons does carbon 12 and carbon 14 have?

• 2 and 4

• 10 and 12

• 12 and 14

• 6 and 8

The order of amino acids in a protein is its

• primary structure

• secondary structure

• tertiary structure

• quaternary structure