Module 2 Flashcards
A systematic process of inquiring about events and things and of using this knowledge to make further investigations.
Science
The process of making scientific inquiry.
Scientific Method
Tentative explanations or predictions.
Hypotheses/Hypothesis
The statement of a general observation that is found to be true in many different systems.
Law
States that “Matter cannot be created or destroyed, only transformed.”
Law of Mass Conservation
Explains observations about a natural phenomenon
Theories or Models
Attempts to explain what we observe about the universe.
Theories
Discoveries from unexpected or unplanned events.
Serendipitous
A French Chemist said, “In the fields of observation, chance favors only the prepared mind.”
Louis Pasteur (1822 — 1895)
Enumerate the Scientific Methods
Observation, Hypothesis, Experiments, Result, Further Hypothesis, Further Experiments, Results, and Theory
A Belgian-born American chemist, thought that it might be possible to synthesize a material with similar properties.
Leo Baekeland (1863 — 1944)
A German Chemist reported gis work on mixing phenol and formaldehyde which resulted in the formulation of a hard insoluble mass.
Adolf von Baeyer (1835 — 1917)
Baekland produced this material that could be molded, cast into a desired shape and machined.
Bakelite
A German Chemist, speculated that materials such as those prepared by Baekland are made up of very large molecules in which atoms are held by strong chemical bonds.
Hermann Staudinger (1881 — 1965)
An American chemist and director of the research program of DuPont Chemical Company, led the research to establish the composition and structure of natural polymers like silk.
Wallace Carothers (1896 — 1937)
Two high school students in the Philippines from Iligan City East High School when they decided to study the bioactivity of barit-baritan (Manila Grass)
Kreshia Mae A. Ello and Orland P. Gadiano
What are Ello’s and Gadiano’s school?
Iligan City East High School
What did Ello and Gadiano performed their bioactivity on?
Barit-baritan/Manila Grass
Scientific name of barit-baritan (Manila Grass).
Zoysia matrella
Ello and Gadiano found that the crude water extract of the leaves inhibited the growth of two GRAM-POSITIVE bacteria which are?
Staphylococcus aureus and Bacillus cereus
Ello and Gadiano found that the crude water extract of the leaves inhibited the growth of two GRAM-NEGATIVE bacteria which are?
Proteus vulgaris and Pseudomonas aeruginosa
Proteus vulgaris and Pseudomonas aeruginosa showed no inhibitory activiy against this fungus.
Aspergillus niger
Commonly found on the skin and nose and occasionally causes infections, some may be serious.
Staphylococcus aureus
Causes food poisoning, with diarrhea or vomiting.
Bacillus cereus
