Here is a copy of a past national challenge exam that you can use in your general chemistry course as a unit or semester review. Sixty multiple-choice questions query learners on properties of matter, stoichiometry, reactions, and...

In this heat transfer and phase change worksheet, learners experiment with ice, salt, and milk to show the relationship between the temperature of a solution and its phase. Students turn milk from a liquid to a solid and graph the...

Students investigate what matter is and how it changes states.  In this physical properties lesson, students examine the vocabulary database and identify the characteristics of the three phases of matter.  Students perform a...

At some point, everyone has been under pressure—even Dalton! Explore Dalton's law of partial pressures with young chemists as they measure the volume of air extracted from a sample compared to its original volume. Class...

Do solids, liquids, and gases even matter? The presentation focuses on changes in matter, including phases, Boyle's Law, Charles' Law, and physical changes. 

Middle school chemists visit interactive websites in order to discover what happens to molecular motion when heat is added to matter. They conduct an experiment that demonstrates the expansion of matter with the addition of heat. A lab...

Students will observe, measure and describe the phase changes of ice. In this science lesson plan, students observe ice as it changes phases. Qualaitative notations made by individual students will be shared and compared.

Examine the effects of temperature and pressure on solubility and the states of matter of ocean water. Learners make inferences about the unique chemistry of ocean water at different depths. They engage in an activity related to...

Adjust the melting time of ice without varying the temperature! Learners experiment with different materials to decide how the materials affect the rate an ice cube melts. They then connect their findings to the conductivity of each...

Participate in three activities that look at the earth's limited water supply and the changes water goes through as it enters each phase of the water cycle. The resource is complete with three activities that demonstrate the changing...

Viewers are a PowerPoint are exposed to the idea that pollutants are in more than just the air we breathe. the presentation provides information about the layers of the earth's atmosphere and takes a look at the pollutants in the...

Scientists participate in a variety of hands-on experiments in this ten-day unit on the three states of matter. Lessons incorporate literature, a-v materials, and poetry to help learners differentiate between solids, liquids and gases.

Learners examine the flow of water. They observe and test the properties of water by using sticks in flowing water. The lesson has streaming video, resource links to access, and a good hands-on activity that is clearly described in the...

Students investigate the concept of dark matter and how it occurs in the universe. They conduct research using a variety of resources. Students use the information by reading at least two articles about dark matter. They also generate...

Using a dry cleaner bag and a blow dryer, create a hot air balloon! The materials list suggests obtaining one dry cleaner bag per student, but since this is probably inconvenient, consider doing this as a demonstration during a...

Students observe and explain how a change in temperature causes a physical change in a substance.  For this physical science lesson, students use a soap making kit to observe the effects of adding heat to the bar soap as they...

Students discover the moon's phases and the rarity of eclipses. In this lunar lesson, students view a video titled Spin Around the Solar System: A Moon Dance, which demonstrates the key differences between a lunar and solar eclipse....

Young scholars experiment with balloons, soda water and raisins to find out about the states of matter.  In this solids, liquids and gases instructional activity, students complete a group activity with balloons to recognize the...

An incredibly colorful PowerPoint presents all the facts and definitions about waves that you could need for beginning physical scientists. There are several useful links to online animations of wave action. This may have been produced...

Every topic under the sun is covered in this New York State Regents High School Examination. With the focus of earth science, participants answer 85 quesitons about the solar system, geologic time, rocks and minerals, landforms, and...

Students explore the definition of matter.  In exploring matter lesson students get into groups and navigate the Internet to answer questions. 

Learners investigate refraction and reflection of light. In this light lesson, students perform 3 activities to observe light interacting with matter by using a flashlight. They explore refraction using a glass of water and reflection...

The majority of this presentation is a collection of diagrams and graphs that back your lecture on biogeochemical cycles. The last few slides define ecosystems and the Gaia hypothesis. You may find these slides valuable, but will...

In this theromochemistry worksheet, students review the kinetic theory of gases and the three phases of a substance. Students calculate how much heat is required to raise a certain mass of solution a certain number of degrees. This...