Teacher will have students work in small collaborative groups 4 students. Yes No Thanks for your feedback! Student answers will guide the teacher in the pacing of the lesson. Grade 8 Do you agree with this alignment? Students will demonstrate their knowledge by creating a visual representation of the layers of the Earth that includes the following information: name, composition, and density. The amount of matter in a given object. Yes No Thanks for your feedback! What patterns did they notice? This economical lab kit provides a complete introduction to basic density concepts for your physical science and chemistry students. Yes No Thanks for your feedback! If students achieve a passing score of 70% or above they have understood the lesson. Grades 9 - 12 Do you agree with this alignment? If necessary please refer back to the guided questions and readdress any misconceptions the students may have.
Density pre-lab questions: i need help answering these questions. This kit is designed to have student groups move from station to station and determine the density of a different material—allowing for a very cost-conscious yet effective lab. Answers will vary, depending upon students' predictions. The curvature is caused by surface tension. Describe patterns such as clustering, outliers, positive or negative association, linear association, and nonlinear association. Students acquire a conceptual understanding of surfactant molecules and how they work on a molecular level. Students review what they know about the 20 major bones in the human body names, shapes, functions, locations, as learned in the associated lesson and the concept of density mass per unit of volume.
Heavy materials should have density values greater than that of water. Yes, a room full of bowling balls would be more massive than a room full of feathers, so this means that bowling balls have a greater density than feathers. Then we divide the mass by the volume. Lab station instruction card masters, a pre-lab activity, background information, post-lab questions and all necessary materials except 100 mL of distilled water are provided in the kit. Remember that the estimated digit is counted as a significant digit.
Activity Extensions Next, conduct the associated activity as the second part of this activity. Use log-log graph to determine the power m and the constant C. This is 1 mL per graduation. Next, the teacher will explain the Density of Solid and Liquid investigation. References Comparing the density of different liquids: How do the densities of vegetable oil, water and corn syrup help them to form layers in a cup? How does the density of the water compared to the density of the object determine which objects will float and which will sink? Next, use the scale increment. Although no charge or fee is required for using TeachEngineering curricular materials in your classroom, the lessons and activities often require material supplies. Post-Activity Assessment Worksheet: Have students answer the worksheet questions and hand them in for grading see answers in the Wrap-Up Discussion, below.
To calculate density, we must measure the mass of an object and its volume. If students achieve a passing score of 70% or above they have understood the lesson. Each substance has unique physical properties, such as color, phase of matter and density, which can distinguish it from other substances. If we had an equal volume, let's say enough to fill this whole classroom, of feathers and of bowling balls, which would have more mass? In this Lab, students create their own definition for the term density and calculate the densities of different substances- solids and liquids. Place all of the pieces of the particular item on the triple balance beam and record the mass. The investigation is to identify an unknown substance based on its' density.
A The volume is greater than 50 mL, since the last labeled graduation below the meniscus is 50. Properties such as density and hydrophobicity must be considered when determining the best way to remediate contaminated sites. You may be asked to give an answer in different units than you're given. There are two graduation marks below the meniscus, and each graduation represents 1 mL, so the certain digits of the reading are 52 mL. They learn about the idea of polar and non-polar molecules and how they act with other fluids and surfaces. Q What is the volume you should record for the solution in the image above? It's a good idea to be familiar with how to perform unit conversions when working these problems.
Teacher can also use guiding questions during teaching phase to provide students feedback based on their answers. Teacher should monitor student learning by circulating the room and ensuring students are participating and understanding the key concepts. Yes No Thanks for your feedback! Then student pairs calculate the densities for different bones from a disarticulated human skelet. Super Value Kit is complete for seven lab stations with two setups at each station—enough for 28 students working in pairs. Yes No Thanks for your feedback! As necessary, guide students on how to read the water level in the graduated cylinder; explain about the meniscus. Pre-Req Knowledge Have students complete the lesson before conducting this activity.
Expect them to mention that mass can be measured directly using a scale or balance, while density is calculated using an object's mass and volume. When the data with the fewest digits has two digits, the calculated areas are all alike up to the first two digits, and then they begin to differ. Grade 8 Do you agree with this alignment? A The rule says that the answer can't have any more digits than the data with the fewest digits. Record the initial volume of water you chose. Measurement Post-Lab Answers Q Based on the number of significant digits in the data used for these calculations, what value should be reported for any of these areas? Worksheets and Attachments Troubleshooting Tips If the marbles roll off the balance beam, place them in a container and then measure the mass of the empty container alone in order to determine the mass of the marbles. Wrap-Up: At lab end, bring students together as a class and ask the following questions.
Predictions: Direct students to the , to rank the test items based on what they believe to be the most and the least dense. One way to do this is to mentally compare your answer against the density of water 1 gram per cubic centimeter. More Curriculum Like This Density Column Lab - Part 2 Concluding a two-part lab activity, students use triple balance beams and graduated cylinders to take measurements and calculate densities of several household liquids and compare them to the densities of irregularly shaped objects as determined in Part 1. A There are three significant digits. None of the shapes of our test items are exactly that shape, so the results from doing it that way would be inaccurate. Describe patterns such as clustering, outliers, positive or negative association, linear association, and nonlinear association.