Chapter 2: The Chemistry of Life

Question 1

The study of the molecules that compose living organisms

• Carbohydrates, Fats, Proteins, and Nucleic acids

Answer 1

Biochemistry

Question 2

Simplest form of matter to have unique chemical properties.

Answer 2

Element

Question 3

Elements are arranged by atomic number and elements represented by one or two letter symbols in this table.

Answer 3

Periodic Table

Question 4

What is the atomic number of an element?

Answer 4

The number of protons in its nucleus

Question 5

6 Elements that make up 98.5% of body weight

Answer 5

• Oxygen
• Carbon
• Hydrogen
• Nitrogen
• Calcium
• Phosphrous

Question 6

Nucleus

Answer 6

Center of an atom

Question 7

Protons

Answer 7

Positively charged particle

Question 8

Neutron

Answer 8

Neutrally charged particle

Question 9

Sum of protons and neutrons

Answer 9

atomic mass

Question 10

Single, negative charged particle with a very low mass that determines the chemical prooperties of an atom.

Answer 10

Electron

Question 11

Electrons in the outermost shell that determine chemical bonding properties of an atom.

Answer 11

valence electrons

Question 12

Varieties of an element that differ from one another only in the number of neutrons and therfore in atomic mass.

Answer 12

Isotopes