Lesson_1 - Laboratory_Tools_and_Safety_Signs.pptx

E F C URE O N NAT SCIE C O M M O N L A BO RAT O RY T O O L S A N D E Q U I P M E N T Essential Questions How does the application of the scientific method affect our lives and the future generatio...

E F C URE O N NAT SCIE C O M M O N L A BO RAT O RY T O O L S A N D E Q U I P M E N T Essential Questions How does the application of the scientific method affect our lives and the future generation? How does the utilization of precise and accurate measurements contribute to the success of scientific investigations? OBJECTIVES 1.Understand the Nature of Science. 2.Name laboratory tools and equipment and identify their functions. 3.Demonstrate proper use and handling of science equipment.  What is SCIENC E Science - comes from the latin word scientia, which means having knowledge. Science - a systematic attempt to establish knowledge that helps explain natural and physical occurrences through objective means. Science HOW DOES IT DIFFER FROM? PSEUDOScience? SUPERSTITION? PSEUDOSCIENCE - any belief presented as scientific despite it not being a product of scientific investigation. SUPERSTITION - a belief that is not usually explained by the methods of natural sciences. - it also began from curiosity and observation, but unlike science, no experiment was conducted to test whether the claims were correct or not. BRANCHE S OF SCIENCE Physics Science that deals with matter and energy and the interactions between them. Chemis tryScience that deals with matter, its composition, structure, and properties, the changes it undergoes, and the energy accompanying these changes.  Earth Science Science that deals with the study of Earth and its composition, the processes that happen in its interior and surface, and how it is similar to and different from other entities in space. Physical Science Biology Science that involves in the study of living things. This group includes all the subspecialties in biology. Biological Science  ON T COMM AB OR A L R Y O BEAK ER An open glass cylinder with a pouring lip use as a standard laboratory container. Used for mixing, stirring, and heating liquid. REAGEN T BOTTLE Used and for storing mixing chemicals. BUNSEN BURNER A small laboratory burner consisting of a vertical metal tube connected to a gas source. It produces a very hot flame from a mixture of gas and air that passes in through the BURE TTE A graduated glass tube with a stop clock at the bottom used especially in a laboratory procedures for accurate fluid dispensing and measurement. ERLENME YER Used to heat and store liquids. FLASK Its bottom part is wider than the top for the content to heat up quicker because of the greater surface area exposed to heat. EVAPORA TING DISH Used to heat and evaporate liquids. FLORENC E FLASK Used for heating substances that need to be heated evenly. It is mostly used in distillation experiments. FUN NEL Used to transfer liquids into another container so they will not spill.  MICRO SPATULA Used small to transfer amounts of solid from one container to another. MORTAR AND PESTLE Used to grind solids into powder for experiments. PIPETTE Used for moving small amount of liquids from one container to another.  RING STAND Used to support items being heated. These rings are perfect for holding beakers, flasks, cones, funnels, and more.  TEST TUBE HOLDER Used to hold test tubes while being heated. TEST TUBE Used to hold test RACK tubes upright while observing reactions or when test tubes are not used in experiments. THERMO METER Used to measure the temperature of solids, liquids, and gases. Usually in centigrade but can also be in Fahrenheit or Kelvin. TONG S Used to hold objects such as flasks, crucibles, and evaporating dishes when they are hot. VOLUMET RIC Used to make solutions FLASK of fixed volume. It is solely used in preparing chemical solutions. LABORATORY R U LE S Laboratory Safety rules LABORATORY SAFETY SIGNS POISONOUS Chemicals are fairly dangerous if ingested or inhaled. Many of these are dangerous upon contact. flammable Chemicals are to be stored in a flame-resistant cupboard. Volatile solvents can be a particular problem as they corrosive Avoid contact with the skin. Bear in mid that these (under some circumstances) can rust chemical cupboards. oxidizing chemical These are materials that spontaneously release oxygen at room temperature with slight heating or promote combustion. keep away from foodstuff Harmful materials are to be kept away from edible materials to avoid contamination. dangerous when wet Walk with caution. This area is slippery when wet. flammable gas or liquid This safety symbol is used for the transport or storage of