This document discusses various laboratory tools and their uses. It describes tools such as Erlenmeyer flasks, Florence flasks, volumetric flasks, beakers, test tubes, crucibles, evaporating dishes, and more. It explains that Erlenmeyer flasks are used for heating and storing liquids quickly due to their wider bottom. Florence flasks are used for heating substances evenly due to their circular base. The document also highlights commonly confused tools and provides an example of a Filipino scientist, Fabian Dayrit, who has researched medicinal plants.
29. Commonly Confused Tools
BEAKER
-for holding, storing, and
heating “medium to large”
amounts of liquid
-mostly for stirring and
combining liquids
TEST TUBE
-for holding, storing and
heating “small amounts”
of liquid
-mostly for observing a
chemical reaction
30. Commonly Confused Tools
CRUCIBLE
-mainly for heating
substances (usually solids)
at very high temperatures
-ceramic
EVAPORATING DISH
-mainly for evaporating
-ceramic
33. Fabian M. Dayrit
Rank: Professor (Full-time)
Education:
BS Chemistry, Ateneo de Manila
University (Top 10 Chemistry Licensure
Exam 1975)
M.A. and PhD. Chemistry, Princeton
University
34. Fabian M. Dayrit
Notable Scientific Accomplishment:
Has worked on medicinal plants such as
lagundi, ampalaya, malunggay, achuete,
and other plants with support from his
group NIMPROMP.
Because of this research, it is established
how effective lagundi (vitex negundo) is
for colds