5 Written questions
5 Matching questions
- electrons (e⁻)
- chemical elements
- trace elements
- Carbon, Hydrogen, Oxygen, and Nitrogen
- atomic mass (atomic weight)
- a The building blocks of all forms of matter -- both living and nonliving; cannot be split into a simpler substance by ordinary chemical means.
- b Negatively charged particles located in a cloud, moving about the nucleus of an atom.
- c The four major elements in the human body.
- d The average mass of all of an atom's naturally occurring isotopes.
- e The elements that make up the last .4% of the mass of the body.
5 Multiple choice questions
- Radioisotopes used to follow movements of certain substances through the body.
- Calcium, Phosphorous, Potassium, Sulfur, Sodium, Chlorine, Magnesium, and Iron; make up about 3.6% of the body's mass.
- The number of protons in an atom.
- The science of the structure and interactions of matter.
- The smallest units of matter that retain the properties and characteristics of the elements.
5 True/False questions
molecular formula → Two or more atoms sharing electrons.
major elements → The elements that make up the last .4% of the mass of the body.
ion → The smallest units of matter that retain the properties and characteristics of the elements.
protons (p⁺) → Uncharged (neutral) particles located within the nucleus of an atom.
mass number → The sum of an atom's protons and neutrons.