Chemistry Lab

Improved Essays
I. PURPOSE
The purpose of this lab was to observe the physical properties of different samples of matter and to use your observations and knowledge of chemistry to classify each sample as an element, a compound or a mixture.

II. MATERIALS
10 beakers containing different samples of matter

III. PROCEDURE
First off, put on a laboratory apron. Then, take a few minutes at each lab station and record three physical property observations of each sample of matter. Record the three physical property observations in Column B on the table. Next, classify each sample as either an element, a compound, or a mixture in Column C. While classifying the samples, think about the composition of the sample. Once all of the samples are classified as an element,
…show more content…
CONCLUSION
Homogeneous means having the same uniform appearance and composition all throughout. Homogeneous can not be separated by physical means. Heterogeneous means having visibly different substances and can be separated by physical means.
The samples I classified as heterogenous were samples, 4 (Oil and Water), 7 (Sand and Water), 8 (Sand and Sugar) and 9 (Soil). My basis for classifying these samples as heterogeneous was being able to see the different/separate parts that were not uniformly distributed and thinking about how if a sample was taken out, not all of the parts would be evenly distributed in every sample taken out.
Two types of pure substances are elements and compounds. The ones observed in the lab are aluminum and table salt.
The samples that are mixtures are, 3 (Sugar Water), 4 (Oil and Water), 5 (Air), 6 (Milk), 7 (Sand and Water), 8 (Sand and Sugar), 9 (Soil), and 10 (Window Cleaner). My basis for classifying these samples as mixtures was, they all have more than one compound or element to make them up.
See answer in lab.

VII. OVERALL
…show more content…
The purpose of this lab was met by successfully observing physical properties and being able to think about what the samples were and what they were made of. Using my knowledge of chemistry, I was able to use my observations and thoughts to piece together the classifications of the different samples. The purpose of this lab was also met because if this lab were to be done again, I could do it better than before with little to no

Related Documents

  • Improved Essays

    This can be titrated to determine the number of moles. Once equilibrium hits, the number of moles and weight of the sample can be determined.…

    • 539 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    6.03 Calorimetry Lab

    • 1044 Words
    • 5 Pages

    Prepare a chart for recording any observations as you test for the presence of cations in the solution. Set up and label 10 test tubes #1- #10 and place them in order in a test-tube rack. Wash and rinse all of glassware with distilled water. Prepare a hot-water bath in a 250 mL beaker by filling it up to 150 ml and bringing it to a boil. Obtain 2 ml of the solution you want to test and pour it into test tube 1.…

    • 1044 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    They can be identified by a color change, if a new gas is given off, if a precipitate or new solid forms, and if light, electricity, or heat is given off. b. observations- The observation that was made was that there was going to be many different experiments set up. Each of the experiments that were going to be set up would have a chemical change or physical change take place. c. purpose-The purpose of this experiment is to find out how to differentiate a…

    • 793 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    Nt1310 Unit 6 Lab

    • 1594 Words
    • 7 Pages

    We also wanted to discover as many chemical and physical properties as possible. Physical properties are those that can be determined without performing any changes to the identity of the substance. Chemical properties are properties that can only be determined after a chemical reaction is performed in order to change the identity of the substance according to “Physical”2…

    • 1594 Words
    • 7 Pages
    Improved Essays
  • Decent Essays

    Nt1310 Unit 1 Lab Report

    • 372 Words
    • 2 Pages

    Read over the entire lab activity. Develop a hypothesis about which properties are most useful for identifying in which group an element belongs. ______________________________________________________________________________________________________________________________________________________ 4. Develop a hypothesis about which properties are the most useful for determining the order of elements within a group. ______________________________________________________________________________________________________________________________________________________…

    • 372 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    6.03 Ph Lab

    • 2243 Words
    • 9 Pages

    The purpose of this experiment is to determine the pH of known substances by use of a pH color indicator of red cabbage and the use of a pH meter. As well as, to observe the pH changes in a substance by adding in more basic of acidic to buffered solutions and unbuffered solutions. This experiment will also will show how to calculate H3O+, OH- and pH by use of known values. In order to do this lab, there are a few key components one needs to know and understand first.…

    • 2243 Words
    • 9 Pages
    Improved Essays
  • Decent Essays

    Neutralize Ph Lab

    • 382 Words
    • 2 Pages

    Three drops of each liquid were put onto into the spots on the spot plate (with pH paper). 4. The color of the pH paper was noted to determine the pH of each substance. 5. A result of the pH level of each substance was recorded in an observation chart.…

    • 382 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    Aspirin Powder Lab

    • 352 Words
    • 2 Pages

    Purpose: The purpose of the lab was to identify a powder based on its physical and chemical properties. Materials & Apparatus: -eye protection -well plate -pipette -small toothpick/ paper clip for stirring -6 white powders: icing sugar, cornstarch, Aspirin powder, baking powder, mystery powder -test solutions in dropper bottles: water, universal indicator, vinegar, iodine solution Safety notes: Aspirin Powder- in case of contact with skin, wash with soap and water. Universal indicator- toxic, in case of contact with skin or eyes, rinse for 15 minutes. Iodine- rinse for 15 minutes in case of contact with skin or eyes.…

    • 352 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    The unknown set given contained substances E (gray liquid), F (dark-clear liquid), G (clear liquid), I (clear liquid), M (clear liquid). In the well plate, drops of the unknown substances were placed into separate wells. The unknown substances were put in order to know which substance was in which well. Separate red strips of litmus paper were placed in each well where the five substances were placed. Observations were made to see if the paper changed in color.…

    • 495 Words
    • 2 Pages
    Improved Essays
  • Great Essays

    Unit 6 Lab

    • 1514 Words
    • 7 Pages

    In this experiment, we are using Calcium, Aluminum, and Magnesium to test our theory about periodic trends. We put these 3 metals through different tests to show why elements in similar group and period react differently. The purpose for this lab is to test the idea of patterns in the periodic trend, and if elements in similar group or similar period react differently due to the trend that they follow. If two elements in the same group or family are to be tested, one of the element reactivity will be slightly different from the other. This is the work of the periodic trends, the characteristics of an element atom change because of the element locations on the periodic table.…

    • 1514 Words
    • 7 Pages
    Great Essays
  • Improved Essays

    The study of microbiology requires not only understanding the microscopic organisms, but also the understanding of lab techniques and procedures used to identify, control, and manipulate microorganisms. The identification of microorganisms is not only important in microbiology lab, but also in the medical field to identify an agent of a disease that will help treat the patient by using the correct antibiotics to kill off the host. In this unknown lab report, techniques and procedures learned in the microbiology laboratory during the semester that was performed to test ones practical understanding of microbiology. The sole purpose of the unknown lab is to demonstrate understanding of the experimental methods and lab techniques learned during…

    • 1057 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    Heterogeneous Mixture

    • 367 Words
    • 2 Pages

    A pure substance has been isolated in the laboratory. Based on the two characteristics below, how 22)…

    • 367 Words
    • 2 Pages
    Improved Essays
  • Decent Essays

    Students, Thank you for coming to lab today. I hope to make our communication as clear as possible to facilitate your success in the lab. Below are some action items for you to consider as we move into September. There will be no lab next week (9/4) but there are items due before we meet next. Experiment 0…

    • 425 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    Lab Report Cation Essay

    • 875 Words
    • 4 Pages

    CH 204- Introduction to Chemical Practices Experiment 1- Qualitative Analysis of Cations Sharon Alexander Kathrynn Labat TA: Yu-Chun Lin September 25, 2017 Results & Discussion This experiment was composed of three parts. In the first part, qualitative methods were used to identify the unknown cation in an aqueous solution.…

    • 875 Words
    • 4 Pages
    Improved Essays
  • Superior Essays

    Cyclograosus Essay

    • 1575 Words
    • 7 Pages

    The melting points of each sample was then observed…

    • 1575 Words
    • 7 Pages
    Superior Essays