In this energy and matter worksheet, students define 28 terms related to moles, matter, energy, the Law of Conservation of Energy, mass, properties of matter and states of matter.

Students study diffusion and how it applies to the human body.  In this diffusion instructional activity students complete a lab activity and discuss what they learned. 

Students make slime. In this chemical reaction instructional activity, student use Borax to make a gel like solution. Students add all ingredients listed, add food coloring, and mix well. Students see first hand how  chemicals react...

Students find moles and molecules used when a candle burns. In this moles and molecules lesson plan, students calculate the initial mass of a candle and the mass of a candle after it burns for 3 minutes. They calculate the mass lost when...

In this thermochemistry worksheet, students indicate whether the given processes are endothermic or exothermic reactions. Students complete the phase change diagram as well as define a given set of vocabulary words. Students calculate...

Second graders discuss why some objects float while others sink. They examine various objects and predict whether or not they will sink or float. Students discover the properties needed for objects to float.

Students study chromosomes and how molecular half life affects them.  In this chromosome instructional activity students complete several lab activities on calculating half life, and cracking alkanes. 

In this moles worksheet, learners complete 93 word problems in they calculate the moles, volume, or mass of different molecules.

In this chemistry worksheet, students find the words that are related to atoms and molecules. The answers are found by clicking the link at the bottom of the page.

Students discuss how changing the structure of atoms and molecules can change the properties of a substance. They brainstorm and review their own examples of phase change with the help of a phase change diagram. Students describe the...

Students explore how density changes. Students read an article on density. They observe a ball and ring demonstration and discuss the outcome. Students draw models of the demonstration and explain what happened.

Eighth graders observe a compound and separate it  into its component parts. In this chromatography activity students complete and activity that demonstrates how mixtures can be separated into components. 

In this molecules worksheet, students calculate the mass or volume of a certain number of moles of a compound. There are 3 difficulty levels of this worksheet, each one has 6 problems to solve.

Students discover how molecules are in constant motion. Through a simple experiment of water containing food coloring, they observe the drops of coloring move even though the water is still. Role-playing as molecules, students stand up...

Students explain that molecules are in everything living and nonliving. They explain that molecules are too small to see but we can watch their movement.

Students use foam packing pieces to represent molecular positioning inside the four layers of earth's atmosphere. This activity help students visualize that molecules become thinner as one ascends higher in the atmosphere.

Students combine movement with science in this fun integrated lesson. When students are "liquid" they can "melt" or "ooze" at the end and when they are are "solids" they can "freeze" in a shape.