Mass Volume and Density
Students will be able to describe density and compare the densities of various materials using their masses and volumes. Content statements: Density is the. Density is defined as mass per unit volume; mathematically, we would write: or mass m density d relationship between mass and volume of the substance. A measure of how tightly packed the particles within a substance are. How much mass is in a given volume of the substance. Formula is.
Density is the amount of matter filling the object's space. 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?
How Are Density, Mass & Volume Related? | Sciencing
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?Volume and Density
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. 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?
Density – a relationship of mass and volume
How can you make the container rest in the water at a different depths? Students should work in their groups to create a plan — they are to write the plan on a white wipe board. Both properties can be applied for three stages or states of matter, which are: To put it simply, it tackles the concept of how much matter or mass is inside an object in the space that it occupies.
This formula is only applicable for objects with uniform compositions, or solid objects. From this same formula, with a few adjustments, the formula for volume and mass can also be derived. In experiments, mass is often determined first before the volume. Density is measured in the following units: Different substances have different densities.
Due to this fact, this property of matter can be used to determine whether a certain sample or substance is genuine. Density can change or vary when temperature or pressure is applied. Volume, in comparison, is a component of density. As a property, volume is concerned with how much space a particular object occupies. Specific shapes like a cube, cylinder, prism, rectangular prism, pyramid, cone, circle, sphere, and other shapes have specific formulas for determining their respective volume.
For liquids and gases, the sample substances are put into a container and calculated.
How are density mass and volume related?
Volume is expressed in units and subunits like cubic meters for solids and cubic liters for liquids and gases. Density and volume have an inverse relationship with each other. If density increases, the effect will be a decrease in volume. In contrast, if the volume increases, density decreases.
Both density and volume are physical properties of matter.