Exam 2: Chemistry Comes Alive

Match the following: -Combined number of protons and neutrons in an atom.

Atom X has 17 protons.How many electrons are in its valence shell (outermost energy level)?

Match the following particles to the correct description: -Electrically charged particle due to loss of an electron.

The four elements that make up about 96% of body weight are ________.

What is the ratio of fatty acids to glycerol in triglycerides (neutral fats)?

A charged particle is generally called an ion or electrolyte.

Salts are always ________.

Protons and electrons exist in every atom nucleus except hydrogen.

With a family history of cardiovascular disease,which toast spread would be considered the most "heart healthy?"

The acidity of a solution reflects the concentration of free hydrogen ions in the solution.

How can DNA be used to "fingerprint" a suspect in a crime?

Which of the following is a neutralization reaction?

What advantages does ATP have in being the energy currency molecule?

Match the following chemical bonds to the correct description: -A bond in which electrons are shared equally.

Match the following: -Heterogeneous,will not settle.

The basic structural material of the body consists of ________.

Which of the following is an example of a suspension?

Tendons are strong,rope-like structures that connect skeletal muscle to bone.Which of the following proteins would provide strength to a tendon?

Explain the difference between potential and kinetic energy.

About 60% to 80% of the volume of most living cells consists of organic compounds.