NAME

Question types


Start with


Question limit

of 32 available terms

Advertisement Upgrade to remove ads
Print test

5 Written questions

5 Matching questions

  1. electrons (e⁻)
  2. ionization
  3. Carbon, Hydrogen, Oxygen, and Nitrogen
  4. free radical
  5. radioactive isotopes (radioisotopes)
  1. a The four major elements in the human body.
  2. b The process of giving up or gaining electrons.
  3. c Negatively charged particles located in a cloud, moving about the nucleus of an atom.
  4. d An atom or group of atoms with an unpaired electron in the outermost shell; makes the atom unstable, highly reactive, and destructive to nearby molecules.
  5. e Unstable isotopes; their nuclei decay into a stable configuration over time, emitting radiation as they do so, and transform into a different element; the time span of the change is anywhere from a fraction of a second to millions of years, depending on the isotope.

5 Multiple choice questions

  1. The elements that make up the last .4% of the mass of the body.
  2. Atoms of an element that have different numbers of neutrons and therefore different mass numbers; most of them are stable and do not change over time.
  3. Anything that occupies space and has mass.
  4. The time required for half of the radioactive atoms in a sample of an isotope to decay into a more stable form.
  5. The smallest units of matter that retain the properties and characteristics of the elements.

5 True/False questions

  1. major elementsCarbon, Hydrogen, Oxygen, and Nitrogen; they alone make up about 96% of the body's mass.

          

  2. protons (p⁺)Positively charged particles located within the nucleus of an atom.

          

  3. atomic mass (atomic weight)The average mass of all of an atom's naturally occurring isotopes.

          

  4. electron shellsNegatively charged particles located in a cloud, moving about the nucleus of an atom.

          

  5. chemical elementsCarbon, Hydrogen, Oxygen, and Nitrogen; they alone make up about 96% of the body's mass.

          

Create Set