Bunsen burner Study guides, Class notes & Summaries

AQA GCSE Biology Paper 1 Required Practicals Graded A How would you perform Required Practical 1 about microscopy? Place the prepared slide onto the stage Then select lowest power objective lens and slowly turn the coarse focussing dial When the objective lens almost touches the slide ,stop turning the dial Now look down through the eyepiece and slowly turn the coarse focussing dial until the cells come into focus Then use the fine focussing dial to bring the cells into a clear foc...

Which of the following are used for smaller loads and lower pressures? Correct Answer Displacement meters Which of the following is defined as a reduction in the primary air intake area that reduces the amount of gas being burned and results in a smaller,soft,lazy flame? Correct Answer Under firing Which of the following results when the blower is arranged to blow air intro the combustion chamber? Correct Answer Forced draft Which of the following are used for large volumes and are suit...

MCB2010 Lab Final Exam Question and Answers | 100% Correct Magnification -Answer-The creation of a larger-than-life image Which part of the flame of a Bunsen burner is used for sterilization of inoculating tools? A) The tip of the inner cone B) The tip of the outer cone -Answer-A) The tip of the inner cone What was Dr. Casadaban's assumptions that proved to be fatal? -Answer-1. That the weakened form of the bacterium used in his experiments would never cause disease 2. That occasional sa...

AQA GCSE CHEMISTRY 8462/2F Paper 2 Foundation Tier Version: 1.0 Final *JUN2384622F01* IB/M/Jun23/E15 8462/2F For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 TOTAL Tuesday 13 June 2023 Morning Time allowed: 1 hour 45 minutes Materials For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the bo...

An antiseptic CORRECT ANSWER is used on the skin Would an autoclave be a good way to sterilize surgical instruments? CORRECT ANSWER yes Would an autoclave be a good way to sterilize blood before a blood transfusion? CORRECT ANSWER no How are the plates incubated? CORRECT ANSWER upside-down A typical pressure in your car tire is around 35psi. Is that higher or lower than the pressure in the autoclave? CORRECT ANSWER higher If someone tells you that a certain item has been disinfect...

Organic Chemistry 234 Lab Exam Questions With 100% Correct Answers What is the proper thing to do shall your clothing catch on fire in the lab? - answerUse the safety shower What is the appropriate way to put out a fire caused by an organic solvent? Why is water not a good choice? - answerUse the fire extinguisher "ABC", water is not a good choice because some flammable materials react violently with water and could make it worse. What should you do when chemicals get in your eye? - ans...

Edexcel iGCSE Chemistry, question and answer with rated solution Experiment for Diffusion? 1) HCl placed at one end of the test tube, ammonia solution at the other. 2) Where they meet, a ring of Ammonium Chloride appears. 3) The diagram shows that the ammonia is closer to the ring, showing that ammonia must have travelled faster, showing it's a lighter gas. Experiment for Dilution? 1) Put a coloured substance in a solvent e.g food colouring in water. 2) Over the time, the colour le...

BTEC Level 3 Applied Science Unit 2 LAB. The aim of this practical is that we are trying to contrast the rate of cooling between stearic acid and paraffin wax. Both paraffin wax and stearic acid have the same forces of attraction between them. The higher the temperature, the higher the kinetic energy of these molecules and the faster they move around and as the molecules move slower, the forces of attraction will be greater as they will be forming bonds. I will be calibrating the thermometer...

What are some things to remember for lab safety? - correct answer--Wash hands and clean bench with Lysol before and after lab -No eating or drinking -Close toed shoes and pants, tie hair back, wear gloves -Never take cultures out of lab -Store bookbag at front of classroom -Don't put things down sink or in trash can, go in biohazard container -Don't open plates with fungal growth -Handle microscopes gently and clean before putting back Aseptic technique - correct answer-a set of proc...