Use the following headings in order, for each lab write up. Purpose: Summarize in 1-2 sentences what you hope to explore or find out in this lab, based on the pre-lab material provided. What we hope to explore in this lab is to find if and what happens to the pH indicators if we add A, B, C and D solutions to them. Materials: List the equipment and chemicals/specimens you will be using to conduct the experiment. Always note any differences from the equipment you actually use and what is written in your text. Include a brief outline of the steps to follow. 1. First, read this entire procedure. Then, design a data table to record your results. Include a title for each column and row in your data table. Make sure your data table clearly indicates each solution you will be using and the indicator it will be mixed with. Give your data table a title. 3. Add Science Classes: Apologia Biology: DNA Extraction Lab of Solution A to each of the six wells of row A of the spot plate.
4. Place a piece of magnesium ribbon in the first well of each of the four rows. 5. Place red litmus in the second well of each row. Place blue litmus in the third wells of each row. 6. Add five drops of bromothymol blue solution to the fourth well of each row. Add five drops of indigo carmine solution to the fifth well. Add five drops of methyl orange solution to the sixth well. 7. Record your results in your data table. State the colour or other observations. 8. Your teacher may wish to see your spot plate once it is completed. Be sure to check before you begin clean up. 9. Clean up and put away the equipment you have used. Follow your teacher’s instructions for disposal of wastes. Writing A Lab Report For You : This is the section where you will record your data that you collect and observations from carrying out the experiment. Grey and bubbles forming on Mg.
Is acid did not change colour. Is a base so the litmus paper turned red. You will often be asked to answer some questions about your experiment. Your answers should be written in full sentences under this heading. 1. List the solutions in order from most acidic to least acidic (most basic). The solutions from most acidic to most basic is indigo carmine, bromothymol blue and methyl orange. 2. Which solution do you think was neutral? Explain how you know. I think the indigo carmine was more neutral, because it did not change colour and it stayed its indicator colour blue. It changes colour when it is mixed with a higher base at 11.2. That big cap could make the solution neutral since the indicator stayed blue when it was mixed with an acid. It would of change if it was a actual base. The other indicators changed colour, but was bases before since they turned the colour of the indicator red and made them acids.
3. You used two bases. Explain how you know which solution was more alkaline (more basic). I know, because on the colour change of the indicator chart for the solutions the bromothymol changes colour further down the column in the acids. 4. How can magnesium metal be used to distinguish between an acid and a base? Well metal is a base since you need a metal and water to make an base and if you have water and a metal mixed with a acid and it changes well you know it is a base. If University Writing Center (UWC) - Lab Reports mix it with a base then it will not change so you can distinguish between an acid and a base with a magnesium. 1. (a) What colour would each of the five indicators be in a solution that is pH 3? What colour would each of the five indicators be in a solution that is pH 10? 2. Suppose you are asked to put together a test kit to determine whether water taken from a factory waste drain is acidic, basic, or neutral. This content has been done with the help of Essay Writers!
Use the following headings in order, for each lab write up. Purpose: Summarize in 1-2 sentences what you hope to explore or find out in this lab, based on the pre-lab material provided. What we hope to explore in this lab is to find if and what happens to the pH indicators if we add A, B, C and D solutions to them. Materials: List the equipment and chemicals/specimens you will be using to conduct the experiment. Always note any differences from the equipment you actually use and what is written in your text. Include a brief outline of the steps to follow. 1. First, read this entire procedure. Then, design a data table to record your results. Include a title for each column and row in your data table. Make sure your data table clearly indicates each solution you will be using and the indicator it will be mixed with. Give your data table a title. 3. Add Science Classes: Apologia Biology: DNA Extraction Lab of Solution A to each of the six wells of row A of the spot plate.
4. Place a piece of magnesium ribbon in the first well of each of the four rows. 5. Place red litmus in the second well of each row. Place blue litmus in the third wells of each row. 6. Add five drops of bromothymol blue solution to the fourth well of each row. Add five drops of indigo carmine solution to the fifth well. Add five drops of methyl orange solution to the sixth well. 7. Record your results in your data table. State the colour or other observations. 8. Your teacher may wish to see your spot plate once it is completed. Be sure to check before you begin clean up. 9. Clean up and put away the equipment you have used. Follow your teacher’s instructions for disposal of wastes. Writing A Lab Report For You : This is the section where you will record your data that you collect and observations from carrying out the experiment. Grey and bubbles forming on Mg.
Is acid did not change colour. Is a base so the litmus paper turned red. You will often be asked to answer some questions about your experiment. Your answers should be written in full sentences under this heading. 1. List the solutions in order from most acidic to least acidic (most basic). The solutions from most acidic to most basic is indigo carmine, bromothymol blue and methyl orange. 2. Which solution do you think was neutral? Explain how you know. I think the indigo carmine was more neutral, because it did not change colour and it stayed its indicator colour blue. It changes colour when it is mixed with a higher base at 11.2. That big cap could make the solution neutral since the indicator stayed blue when it was mixed with an acid. It would of change if it was a actual base. The other indicators changed colour, but was bases before since they turned the colour of the indicator red and made them acids.
3. You used two bases. Explain how you know which solution was more alkaline (more basic). I know, because on the colour change of the indicator chart for the solutions the bromothymol changes colour further down the column in the acids. 4. How can magnesium metal be used to distinguish between an acid and a base? Well metal is a base since you need a metal and water to make an base and if you have water and a metal mixed with a acid and it changes well you know it is a base. If University Writing Center (UWC) - Lab Reports mix it with a base then it will not change so you can distinguish between an acid and a base with a magnesium. 1. (a) What colour would each of the five indicators be in a solution that is pH 3? What colour would each of the five indicators be in a solution that is pH 10? 2. Suppose you are asked to put together a test kit to determine whether water taken from a factory waste drain is acidic, basic, or neutral. This content has been done with the help of Essay Writers!