LEARN NC

K–12 teaching and learning · from the UNC School of Education

Goal 4

The learner will conduct investigations and utilize technology and information systems to build an understanding of chemistry.

Objective 4.06

Describe and measure quantities related to chemical/physical changes within a system:

  • Temperature.
  • Volume.
  • Mass.
  • Precipitate.
  • Gas production.

Resources aligned to this objective

Winter advisory: The effect of salt on the freezing point of water
In CareerStart lessons: Grade eight, page 5.9
In this lesson, students complete a lab to help them understand the effect of salt on the freezing point of water. Students discuss the benefits and drawbacks of using salt as a de-icing and anti-icing agent on roads.
Format: lesson plan (grade 8 Science)
By Tammy Johnson and Martha Tedrow.
Physical and chemical changes
This is a PowerPoint presentation to help students distinguish between physical and chemical changes. It includes teacher demonstrations to check the students' understanding.
Format: lesson plan (grade 8 Science)
By Louise Whealton.
Electroplating: When is a penny worth less than one cent?
In CareerStart lessons: Grade eight, page 5.8
In this lesson, students understand the chemical differences between pennies made before and after 1982, and gain an understanding of the process of electroplating.
Format: lesson plan (grade 8 Science)
By Tammy Johnson and Martha Tedrow.
Does it float? Exploring density
Density is a property of matter that requires abstract understanding from your students. This lesson plan is a hands-on lab for exploring the concepts of mass, volume, density, and their relationship. This lab achieves several 8th grade science objectives and incorporates mathematical objectives as well. The lab can easily be used as an introductory lab for the year, thus covering not only the content objectives, but also procedures for completing labs throughout the course of the year.
Format: lesson plan (grade 8 Science)
By Trish Loudermilt.
Density of common liquids
Each lab team will determine the density of water and one of the sample liquids. The class will then compile their information.
Format: lesson plan (grade 8 Mathematics and Science)
By Sansia Coble.

Resources on the web

Temperature changes everything
The primary purpose of these activities is to introduce the students to the concept that temperature causes molecules and atoms to move faster and farther apart, which in turn causes the change from solid to liquid, and liquid to gas. (Learn more)
Format: lesson plan (grade 8 Science)
Provided by: American Association for the Advancement of Science
Putting the ice in hockey
In this Science NetLinks lesson, students will explore a website to learn that what happens at the surface of ice to give it its slippery nature can be explained by molecular motion. (Learn more)
Format: lesson plan (grade 8–12 Science)
Provided by: American Association for the Advancement of Science
Pizza cheese
In this Science Update, from Science NetLinks, students hear why the cheese on pizza tastes different when it is reheated versus when it is originally baked. (Learn more)
Format: activity/lesson plan (grade 6–8 Science)
Provided by: American Association for the Advancement of Science
A matter of state
The purpose of this lesson is to help students understand that particle movement changes as a substance changes from one phase to another phase. (Learn more)
Format: lesson plan (grade 8 Science)
Provided by: American Association for the Advancement of Science
It's a crash test, Dummy
This lesson begins with an Internet exploration of how air bags in cars were developed to solve a very practical problem: saving lives in automobile accidents. It also examines some of the safety issues surrounding air bags. (Learn more)
Format: lesson plan (grade 8 Science)
Provided by: American Association for the Advancement of Science