Mass and Volume Relationship lab by zoe pharo on Prezi
Page: ______ Volume and Density Lab Low Density = parts are farther apart High Density To examine the relationship between mass, volume, & density. If your lab report looks like someone else's, you will be heavily-penalized, regardless of who copied who. INVESTIGATING MASS-VOLUME RELATIONSHIPS. View Lab Report - Relating Mass and Volume Lab Report from ENGLISH 11 at Tottenville Density, however, is the relationship between mass and volume.
Density Unit Plan Mini Lesson: Density Review and Introduction to Physical Properties 25 minutes In my school district, Density is a unit that is covered in the previous grade level. However, it is a concept that is important to review and develop further conceptual understanding. The reason I mention this is that in this quick mini lesson, I only quickly review how to calculate density. I provide students with this Density Reference Sheet that they have access to during the lab if they ever needed a quick refresher.
Then, as a class, I review the information on the sheet. A couple of aspects of this discussion worth noting include: It is important that this heart comes to a point at the bottom.
This is just like mass over volume! This is demonstrated in the video below. With this tool, students can cover up the variable they are trying to calculate and it will reveal the operation that must be completed. Equally as important as discussing the formula for density is describing how density is referencing how "tightly packed" the particles in a substance are.
Mass and Gaseous Volume relationships in Chemical Reactions - Mr Carson's Science Page
When discussing the lab tools required to measure mass and volume, I hold up the tool in front of the class so that they get a clear visual of what each tool looks like. When reviewing displacement, I model it for the class in a graduated cylinder. Because it is hard to see, I draw the graduated cylinder, water, and object on the board to represent what I am seeing in the cylinder.
The discussion might unfold like this: Earlier, we were saying that a physical property that was a characteristic that you can see or measure. And, you were completely write! A property describes how an object looks, feels, or acts. Physical properties can be observed or measured without changing the composition of matter what the matter is made up of.
Physical properties are used to observe and describe matter. What do you think might be some examples of physical properties? If I gave you a substance, what characteristics of the substance could you observe or measure?
Students brainstorm a list similar to the following: When I write their suggestions on the board, I make sure I use the science vocabulary. How do mass and volume affect density? I linked those sets to a website that you could purchase them; however, they are available on almost any science material website. Students are divided in groups of 4 or five. At each station, I provide graduated cylinders, scales, and calculators. Students work through the procedure in the student document on their own, switching from one side of the room to the other when they are finished with their first set.
Prior to rotating, students must show me their data table. If there are one or two cylinders whose densities are off, I send them back to measure again. I let students know that after they collect their data for one set and rotate to the next set and there are no available stations, the students can begin answering questions for the set they already completed while they wait.
Also, I encourage teamwork here. Tell students that density is a characteristic property of a substance. This means that the density of a substance is the same regardless of the size of the sample. Is density a characteristic property of water? How do you know? Density is a characteristic property of water because the density of any sample of water at the same temperature is always the same. Explore Project the image Density of Water.
Water molecules all have the same mass and size.
Density of Water
Water molecules are also packed pretty close together. They are packed the same way throughout an entire sample of water. So, if a volume of water has a certain mass, twice the volume will have twice the mass, three times the volume has three times the mass, etc.
No matter what size sample of water you measure, the relationship between the mass and volume will always be the same. Project the animation Liquid Water. Water molecules are always moving.
But on the average they are packed the same throughout. The Density of Water Using the electronic balance, obtain the mass of your mL graduated cylinder. Make sure it is dry before you weigh it.
Density Cylinder Lab: An Introduction to Density
Add mL of distilled water to the graduated cylinder. Precisely measure this volume of water. Then measure the combined mass using the electronic balance.
Add another mL of distilled water to the graduated cylinder. Again, precisely measure this volume of water, and then measure the combined mass using the electronic balance. Repeat Step 3 to obtain a third set of mass and volume measurements. Use your thermometer to record the temperature of the water in your graduated cylinder. Subtract the mass of the empty cylinder from each combined mass measurement to obtain three mass measurements of water.
Use the three sets of mass and volume measurements to calculate three density values for water. Then take the average of these three density values. Finally, look up the true density of water at the temperature used, and evaluate the accuracy of your average density value by calculating your percent error. Obtain a sample of aluminum from your instructor. Transfer all the pellets to the beaker, and measure the mass of the beaker and pellets.