Purpose To check whether mass is gained or lost during a Chemical reaction. Hypothesis Equipments and Materials • Eye protection • Test tube • 250 ml Erlenmeyer flask and stopper • Weight Balance • Antacid tablet • Dilute solutions of o Sodium Hydroxide‚ NaOH(aq) o Iron(III) Nitrate‚ Fe(NO3)3 • Funnel • Cylinder Procedures 1. Put eye protection on for safety purposes. Part A: Reaction between Iron(III) Nitrate and Sodium Hydroxide. 2. Take two cylinders and fill one (full)
Free Sodium hydroxide Chemistry Sodium
Make sure that there are no problems with your lab that could affect the results before you turn on the light source‚ for example‚ a broken beaker or light source. 12. Make a table to record your results from the lab with. Make the table 4 columns wide‚ mark the first column with “Time”. Mark the second column with “number of floating chads in beaker #1”. Mark the third column with
Premium Light Photosynthesis Plant
Exercise No. Respiratory System I. Introduction Oxygen is a very important element which our body needs. Without oxygen life is not possible without oxygen which helps in producing energies that our body cells need. But‚ how do we acquire this oxygen needed by the body? It is by the process called Respiration. Respiration is a process of taking in and out of air from the body. There are two kinds of respiration called cellular respiration and external respiration. Cellular respiration
Premium Respiratory physiology Respiratory system
Introduction The natural environment is highly populated with microorganisms such as bacteria‚ fungi‚ protista and several others. Microorganisms are microscopic in size and vary shape. They are found in the air‚ in water‚ on land and on other organisms such as humans and pets. Many microorganisms grow at rapid speeds and can be harmful and cause diseases. Although microorganisms may cause harm‚ society benefits from microorganisms in many ways. Microorganisms are necessary for the production of
Premium Bacteria Microbiology Agar plate
Purpose: To find out the densities and to find out the name of the unknown metals. (Based on the extensive and intensive properties) Check up the words mass‚ volume‚ density‚ extensive properties‚ and intensive properties. Where do the units for mass and volume) come from and what do they mean? What is the density of distilled water? What is Archimedes principle? Does temperature affect the density of a solid? Liquid? Gas? Materials: Safety glasses‚ 10‚ 25 or 50 mL graduated cylinders
Premium Water Liquid Density
Zhane’ Jackson April 16‚ 2013 Bio 112L Lab Report Bones and the Digestive‚ Respiratory‚ Circulatory‚ and Nervous Systems Introduction: Bones are what our skeletal systems are made up of. There are 206 bones in the human body of the adult skeleton. The adult skeleton is broken up in two divisions: the axial skeleton‚ and the appendicular skeleton. The axil skeleton is made up of 80 bones‚ and the appendicular skeleton is made up of 126 bones. As for the different systems of the body‚ we
Premium Bone Skeletal system Heart
2012-11-21 Staphylococcus aureus is the most pathogenic for humans and Staphylococcus epidermidis is part of the normal flora and is of low pathogenicity. Staphylococcus epidermidis and Staphylococcus aureus are two medically important species of bacteria. A culture from the nose and throat was taken to perform whether or not Staphylococcus epidermidis or Staphylococcus aureus were detected. Test were performed to determine which Stpahylococci was present and the results of the test indicated that
Premium Staphylococcus Bacteria Staphylococcus aureus
Based on the prompt above‚ “You are going to test your body’s ability to maintain homeostasis. You will test this by monitoring a person in your group’s breathing rate‚ heart rate‚ and qualitative observations” we devised a hypothesis which states that if a person exercises‚ his/her heart rate‚ breathing rate and sweat (qualitative observation) will increase in order for our bodies to maintain homeostasis and control our bodily functions. Based on our experiment we found that in Trial 1 the heart
Premium Heart Oxygen Physical exercise
maltose at 37 ºC (body temperature) and a pH of 7 (neutral). Conclusion In a prior lab‚ it was given that the enzyme Aspergillus oryzae (fungus) works best at warm temperatures and an acidic pH‚ porcine (pig) works best at body temperature (37 ºC) and
Premium Enzyme Chemical reaction Metabolism
Lactic Acid Bacteria Amanda Perry Many persons are oblivious to the fact that when they consume certain delicious food products like yogurt‚ buttermilk or cheese‚ they are actually eating live bacterial biomass which has acidified the milk content and contains a mixture of bacterial slime layers. Perhaps it is a blessing that most people are unaware because when most hear the word ‘bacteria‚’ their first thought is of a microscopic unicellular organism that causes various types of diseases especially
Premium Lactobacillus Microbiology Milk