Mass and Weight

DE Science Elementary
“5-Minute Prep” for
Properties of Matter
Mass and Weight
Mass and Weight – The Big Ideas
All matter has mass and takes up space.
Gravity produces weight based on the mass of an object.
On Earth, a scale measures mass of matter.
In space with no gravity present, an object has mass but
no weight.
• Liquids have mass.
• Air and other gases have mass.
• The mass of any object or material is equal to the sum of
the mass of its parts.
Mass and Weight – Prior Knowledge
Students often confuse mass and weight. It will help for
students to use the FUN-damental, What’s the Matter, to
review mass and weight. It will be helpful if students have
been measured when they step on a scale at the doctor’s
office or at home.
Mass and Weight – Common Misconceptions
• Mass and weight are the same and they are equal at all
– Reality: On Earth, a scale measures mass of matter, but in
space without any gravity present, an object has mass but no
• Gases do not have mass.
– Reality: Gases are matter, which means they have mass and
occupy space.
Mass and Weight – Using DE Science Content
When you close this presentation, you can review the
following recommended resources for Mass and Weight.
• Exploration: Mass and Weight
• Reading Passage: Camels in Space
• Video: Gravity and Mass
• Video: Measuring Gases
Use the PowerPoint version of this presentation for
hyperlinks to these resources or you can get to them
through the browser or search feature.
Mass and Weight – Instructional Ideas
• Blow up one balloon fully and another balloon half way
for each pair of students.
– Have each pair of students place the balloons on the end of a
long dowel and then hang the dowel from the center to measure
the weight in a mock scale.
– Ask students to describe what they have observed.
– Then, have students explain either verbally or in writing why the
two balloons are not balanced.
Mass and Weight – Instructional Ideas
• As a class and after exploring the video and exploration,
construct a concept map of mass.
– Make sure that students include and branch out concepts
involving gravity as well as each state of matter.
State Standards:
If you wish to review your state standards regarding Mass
and Weight, click here to get to the curriculum standards
search feature of DES.
You can click on any standard to see what resources are
available to teach it.
Additional Information:
For additional content, check the Extend section within the
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