THE BASIC JOB OF CHEMICAL LABORATORY INDUSTRIAL CHEMISTRY CLASS : X SEMESTER : 1

APPLICATION THE BASIC JOB TECHNIQUE OF CHEMICAL LABORATORY After learning competencies students are expected to be able to:  Explain the various means of laboratory chemicals  Explain the use of various laboratory equipment chemical  Explains how cleaning equipment and practicing chemistry laboratory  Practice the basic techniques in chemistry laboratory  Identify the occurrence of chemical reactions based on observation from the results of the experiment  Concluded quantitative parameters based on chemical reaction observation results of the experiment

THE KINDS OF CHEMICAL LABORATORY TOOLS  Cup (measuring cup, glass beaker, flask peck, burette, volume pipette, funnel etc.)  Iron or other metals (stative, clamps, three foot, crush pliers etc.)  Timber (test tube clamp, tube rack, place the separator funnel etc.)  Porcelain (cup, crush, mortar + pounder, plate drops etc.)

 Plastics (spray bottles)  Rubber (pro pipette, gag, gloves etc.)  Optical tools (microscope, refraktrometer etc.)  Power tools (balance sheets, electric mixer, electric heater etc.) Teknologi dan Rekayasa

UTILITY OF CHEMICAL LABORATORY TOOLS  Beaker Glass (solvent to place, scale and solid solution, heating liquids, place the sediment)  Erlenmeyer flask (accommodate titration at the time, heating liquid with minimum heating, temporary storage, filtering results to filtrate)  Test tube (mixing and heating liquid in a small volume)  Funnel (filter, move the liquid to the mouth, which is smaller without overflow)  Watch glass (cover glass beaker at the time of heating the sample, weighing a small amount of solid, crystal formation)

 Crush porcelain (cremate sample)  Porcelain cup (liquid evaporation)  Tang crush (crush holding a very hot)  Spatula (taking the form of solid chemicals)  Pounder mortar porcelain (crush solid substance become powder substance) Teknologi dan Rekayasa

 Clamper test tube (test tube holding)  Trunk mixer (swirl fluid)  Flask peck (making the solution with the concentrated and a thinned solution)  Pipette volume (to take a certain amount of fluid in exactly) Teknologi dan Rekayasa

 Pipette drops (taking fluid drops in a small scale)  Picnometer / hydrometer (mass determine the type of liquid)  Bottles weigh (weight liquid)  Wire netting (bed in the spread of heat coming from the burner) Teknologi dan Rekayasa

 Three Foot (holding gauze in heating)  Burette (drops in order to provide a solution of molasses with carefully calculated at the time titration)  Measuring pipette (the amount of fluid in the different) Teknologi dan Rekayasa

 Burette (drops in order to provide a solution that drops carefully calculated at the time titration)  Decikator (drain and save the solid sample the water should be free)  Measuring cup (to measure the volume of solvent that is not require a high accuracy in a certain amount) Teknologi dan Rekayasa

 Suck Ball / pro pipette (to help process liquid with pipette measure / volume pipette)  Stative (upholding burette)  Burette clamp (holding burette used at the time titration) Teknologi dan Rekayasa

THE METHOD TO CLEANING CHEMICAL LABORATORY TOOLS 1.Various stains on the polluter lab equipment (glass equipment) 2.Kind of detergent / cleaner and how to make 3.How cleaning equipment (adjusted between stains and cleaning solvents)

THE BASIC TECHNIQUE AT THE LABORATORY 1. How to take a solid from the solid storage bottles - Select the smallest bottle - Open the cap and place the bottle in the inverted - Inuring take a few chemicals - Shake bottle to release the contents with the spatula clean and dry - Turning and angle and pour appropriate amount of needs - Immediately close the bottle again - Immediately clear if there is a spillage of chemicals

2. How pouring liquid from the reagent bottle - Remove the bottle cap with a turn carefully - Place in a closed bottle upside - Hold the bottle in place of the existing label - Pour liquid according to the required - Touching on the bottle in place foundry - Close the bottle immediately - Wash and dry the outside of the bottle when have a liquid spilled

3. How pouring liquid from a glass beaker - Hold the glass rod for mixer prevent the pouring mouth - Angle the glass beaker, let liquid flow around the stem mixer - Standing pour glass beaker

4. How to shake test tube - Use closed cork / rubber - Hold, and shake with the cover movement up and down - Move the cover with caution

5. How to heat substances in the test tube - Catch the top of the tube with the tongs tube - Heat the tip of the tube with the bottom edge on fire - Shaking tube is (position slightly sloping), occasionally lifted when boiling - During the heating mouth tube directed to place an empty - Done warming, save the tube on the rack tube

6. How to smell a rat gas - Kibas-kibaskan hand on the tube tothe nose 7. How to use balance sheet - Nolkan first balance sheet is - Put the substances that will be pondered on the scales - Read the value shown on the monitor screen - After use, re-balance at zero position

8. How to create a solution using flask peck - Dense substance must first dissolved in cup glass - Pouring solution to the flask with using a funnel - Glass beaker and funnel rinsed several times - Rinse added flask peck - Content of squash with aquadest sign up - Clean the top of the sign - Shake that flask

9. How to take a solution using the pipette and the pipette volume measure : - Place the pro pipette at the top of the pipette volume - Sucking solution, lift and clean the outside the tip of the pipette - Remove the contents to the upright position, the tip of the patch pipette on the side in the vessel

10. Using a burette - Tap is closed, the solution incorporated from the top of the funnel until the sign up zero - Open the burette tap, until the contents flow to zero marks - Clean up the rest of the solution at the zero sign

11. Using a funnel - Folding the filter paper into four part - Open the fold (cone) - Place the filter paper on top of the chimney (filter paper a little drabble aquadest) - Position filter paper 1 cm below the shaft

Identify The Chemical Reaction based on the observed Of the chemical reaction by a change that can be observed, such as: 1. The occurrence of gas 2. The occurrence of precipitation 3. The change in temperature 4. The change color

Concluded The Parameter Quantitative Chemical Reaction based on the observed  The Law of constancy mass (Lavoisier law): in a closed system, The substance mass before and after the reaction is the same  Put into the erlenmenyer 10 ml of 0.1 M KI solution and 5 ml Pb (NO 3 ) 2 in a small test tube, insert the test tube into the Erlenmeyer (tubes tied yarn) and closed with a cork or rubber stopper Erlenmeyer flask is. Erlenmeyer flask and weigh the contents and note the mass, erlenmenyer flask angle so that the two can be mixed with solvents, the changes that occur and weigh more erlenmenyner flask with its contents and record mass occurred and weigh more erlenmenyer flask with its contents and record the mass