2.  Anything that takes up space and has mass  Matter

3.  The amount of material in matter  Mass

4.  The smallest stable units of matter  Atoms

5.  Subatomic particle with a positive charge  Proton

6.  A subatomic particle with a neutral charge  Neutron

7.  A subatomic particle with a negative charge  Electron

8.  The number of protons in an atom  Atomic number

9.  Electrons travel around the nucleus at high speeds forming a spherical ___________  Electron cloud

10.  A pure substance composed of atoms of only 1 kind  Element

11.  The total number of protons plus neutrons  Mass number

12.  Atoms of the same element whose nuclei contain the same number of protons, but different number of neutrons  Isotopes

13.  The actual mass of an atom  Atomic Weight

14.  Elements that do not participate in chemical processes  Inert

15.  Elements with unfulfilled outermost energy shells  Reactive

16.  Formed by interactions between atoms  Chemical bond

17.  Type of bond between ions where electrons are lost and gained  Ionic bond

18.  Type of bond where electrons are shared  Covalent

19.  An ion with a positive charge  Cation

20.  An ion with a negative charge  Anion

21.  Weak attractive force that occurs between atoms within a large molecule  Hydrogen bond

22.  Maintains its volume and shape in ordinary temperature and pressure  Solid

23.  Constant volume but not shape  Liquid

24.  Neither a constant volume or shape, may be compressed or expanded  Gas

25.  The sum of component atoms  Molecular weight

26.  Reaction type where a molecule is broken down into smaller fragments  Decomposition

27.  What are the levels of organization  Atoms  Cell  Tissue  Organ  Organ system  Organism

28.  A reaction where smaller molecules are made into larger ones  Synthesis

29.  A reaction where parts are shuffled around creating new products  Exchange

30.  Reactions that may be reversed  Reversible reaction

31.  The amount of energy required to start a reaction  Activation energy

32.  A special protein that promotes a chemical reaction by lowering the activation energy  Enzyme

33.  A substance that accelerates a reaction but is not changed or consumed by the reaction  Catalyst

34.  Reactions that release energy  Exergonic

35.  Reactions that absorb energy  Endogonic

36.  Compounds that usually do not contain carbon and hydrogen as their primary ingredients  Inorganic compounds

37.  Always contain carbon and hydrogen as its base  Organic compounds

38.  A substance that our physiological systems depend on, makes up 2/3’s of our weight  water

39.  Molecules that interact with water  hydrophillic

40.  Molecules that do not readily interact with water  Hydrophobic

41.  Inorganic molecules whose ions conduct an electrical current in a solution  Electrolyte

42.  Scale used to identify objects as an acid or base  pH scale

43.  2 monosaccharaides joined together  Disaccharide

44.  Long chains of amino acids, most abundant organic compound in our bodies  Protein

45.  Levels of protein structure  Primary  Secondary  Tertiary  Quaternary

46.  The study of the internal and external structures of the body and their relationships with one another  Anatomy

47.  The study of how living things perform their vital functions  Physiology

48.  Combinations of Greek words prefixes, and suffixes  Medical terminology

49.  The study of cells  Cytology

50.  The study tissues  Histology

51.  The front  Anterior

52.  The back  Posterior

53.  The head  Cranial

54.  The tail  Caudal

55.  Above  Superior

56.  Below  Inferior

57.  Towards the longitudinal axis  Medial

58.  Away from the longitudinal axis  Lateral

59.  Toward an attached base  Proximal

60.  Away from an attached base  Distal

61.  Horizontal section of the body  Transverse

62.  Section separating the body into right and left portions  Sagittal

63.  A section that separates the body into an anterior and posterior portion  Frontal