Mini Fall Final Review

Front

What is a polymer?

Back

A polymer is a large molecule made up of many smaller repeating units called monomers.

Front

How many bonds can an atom with 4 valence electrons make?

Back

An atom with 4 valence electrons can make 4 bonds.

Front

What characterizes a stable atom?

Back

A stable atom has a filled outer shell of electrons.

Front

What does DNA use to store information?

Back

DNA stores information in the sequence of nitrogenous bases.

Front

What is the net charge of + + + - - - -?

Back

The net charge is -1.

Front

Define valence electrons.

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the significance of a filled outer shell in atoms?

Back

A filled outer shell makes an atom stable and less likely to react with other elements.

Front

What are nitrogenous bases?

Back

Nitrogenous bases are the building blocks of DNA and RNA, consisting of adenine, thymine, cytosine, guanine, and uracil.

Front

Explain the term 'ionic bond'.

Back

An ionic bond is a type of chemical bond formed through the electrostatic attraction between oppositely charged ions.

Front

What is the role of the phosphate backbone in DNA?

Back

The phosphate backbone provides structural support and stability to the DNA molecule.