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?

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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