A&P Chapter 2

Question 1

2.1 Define an atom, and describe the properties of its subatomic particles. p. 51

Answer 1

Atoms are the basic particles of matter and the smallest stable units of matter.

3 subatomic particles:
Protons (positive charge)
Neutrons (electrically neutral /uncharged)
Electrons (negative charge)

Question 2

2.2 Describe an atom and how atomic structure affects the mass number and atomic weight of the various chemical elements. p. 52

Answer 2

Typical atoms contain…