# Relationship between mass and volume of an object

### The Relationship Between Mass, Volume & Density | Sciencing

Define mass. 2. How do you measure mass? 3. In which units is mass measured ? 4. Define volume. 5. How do you measure the volume of a. Objects that have a large mass and small volume have a high density. . What is the relationship between mass and volume for an object that has a high density. Lab #3: Relationship between Mass and Volume October Introduction: There is a relationship between the mass and the volume of an object of a specific.

What will students know and be able to do as a result of this lesson? Students will be able to: Density is the amount of matter filling the object's space.

### Density: The Relationship Between Mass & Volume by Amanda Cull on Prezi

Adding mass to an object without changing its volume, increases the object's density. Objects that have a large mass and small volume have a high density.

Objects that have a small mass and a large volume have a low density. What prior knowledge should students have for this lesson? What are the guiding questions for this lesson? Why do objects sink? What is the difference between the Diet Coke can and regular Coke can that explains why the diet one floats? What variables can you change to make the canister rest at different levels in the water, and eventually sink?

What variables can you change to cause the grape to float?

How will the teacher inform students of the intent of the lesson? How will students understand or develop an investigable question? Students are in groups of 3. Each chooses a number — 1, 2, or 3. Show a regular Coke and a Diet Coke can both unopened to the class.

## Density – a relationship of mass and volume

In their notebooks, students are to list how the two are similar. After a few minutes, randomly call on students to share their answers the observations can be about the outside of the cans or what they each contain — NO opinions. Then students create a T-chart to contrast the two. Again, have the students share answers with the class.

Afterwards, tell the students that you are going to place the cans into a tank of water. The students write down what they predict what each can will do. If a student writes "One will float and one will sink," then tell the student to be specific-identify which can floats and which one sinks. Have the students share their answers with the group and come up with a consensus. Randomly call on students to share their group's answers. Put both cans in the tank of water.

Students record their observations.

In their groups, students discuss why the Diet Coke can floated and the regular Coke can sank. Have enough cans of Diet Coke and regular Coke so that each group can measure the mass of each kind. Again restate an earlier observation that they both have the same volume. What will the teacher do to give students an opportunity to develop, try, revise, and implement their own methods to gather data? Each lab station should have a balance, a graduated cylinder, a beaker, a spoon, and salt.

Groups go to their lab stations with their white board. Give each group an empty plastic canister such as a film canister into a beaker of water. Why does it float? Although mass and volume are properties you deal with every day, the idea of density is a little less obvious and takes careful thought. However, once you get the hang of it, density is very useful. To get density, divide mass by volume.

For example, a lead brick, 5 cm x 2 cm x 10 cm, weighs 1, g. Divide 1, by to get the density of lead, Mass is not completely understood, so it is defined in two very different ways: Inertial mass measures how strongly an object resists acceleration, while gravitational mass measures how strongly an object attracts other things to itself.

Strictly speaking, a scale measures weight, but you can usually think of weight and mass as the same thing. Space and Volume Volume measures the spatial size of an object. Although the formula used to calculate volume depends on its shape and can be complicated, you can think of it generally as width times height times length. Measuring an object's volume can sometimes be easier than calculating it. Putting it into a large container of water and measuring the rise in water level can quickly find the volume, no matter what shape it is.