When two liquids combine and a solid forms, the new substance is called a precipitate. Scholars test their knowledge of hydroxide precipitates and their properties. A series of four increasingly difficult puzzles challenge their logic...

Enzymes: not just for breaking chemicals apart. Young biologists perform an experiment on potatoes. They first remove starch from potato extract. They then add the resulting liquid to samples of glucose-1-phosphate, glucose, maltose, and...

Water is the source of life. It appears in poetry in both peaceful and torrential descriptions; it appears in earth science in its liquid, gaseous, and solid states. Combine these interpretations of our planet's most precious and...

Don't let your lesson plans go up in smoke—unless they include Boo Bubbles, of course! An engaging laboratory mixes liquid soap and dry ice to create smoky bubbles that burst on impact, making it the perfect way to celebrate Halloween in...

Pour a solid foundation of engineering into the minds of future engineers. Scholars take part in three activities to learn about civil engineering. They build a model of a cable-stayed bridge, conduct an experiment to see the effects of...

Eggshells and seashells have a lot in common. Learners use the similarities to conduct an experiment that models the effect of ocean acidification on marine animals. Using varying levels of acidic liquids, pupils make observations on the...

Let's have a gas. Individuals mix baking soda and vinegar in a bottle. Learners view the interaction between the solid and the liquid and notice that a gas is formed. Scholars notice the gas inflates a balloon stretched across the mouth...

Watch red cabbage juice turn green. Pupils first watch a video that takes them through the process of creating red cabbage juice. They then add various solids and liquids to the juice and use the color change to determine whether the...

Where did the water go? Learners conduct an experiment to see how the difference in temperature affects evaporation rates. Scholars continue to investigate evaporation by comparing water and alcohol evaporation rates. Pupils experiment...

From solid to liquid and then back again. Young scientists  dissolve salt in water and then evaporate the water while observing what happens to the solute. They use their observations to make predictions about other solutions.

Demonstrate the particle theory of matter to high school scientists with an engaging experiment that allows them to visually see the results as substances change from one state to another. The class concludes with a discussion about how...

We use basic units of measurement to break down things and communicate clearly. The first lesson in an 11-part series teaches the proper way to measure various items. It starts simply with measuring the dimensions and areas of geometric...

Students carry out a cost analysis. In this comparative math lesson, students compare the cost of equal measures of gasoline to mouthwash, house paint, fruit juice, white-out, and other liquids.

Fourth graders identify a physical change as one that results in a change in size, shape, or state of matter. After an initial teacher-led discussion and demonstration, groups of students get together to perform an experiment which...

For this states of matter worksheet, students solve 9 clues in a crossword puzzle about solids, liquids and gases as well as the terms for changes in state.

Learners measure the amount of surface tension using a balance scale after a classroom demonstration students diagram the appearance of several liquids and label them.

You know that liquid nitrogen turns into a gas at room temperature. Place some in a two-liter bottle for a physics demonstration of the ideal gas law. Beware, however; this is a dangerous demonstration! Not to mention that you may not...

Students observe a teacher demonstration o classifying matter by its physical properties of shape and size. After discussing the definition of matter, students describe the state of matter. They sing a song to the tune of "Bingo." In...

Upper graders use a variety of tools to measure liquid and solid ingredients in an ice cream making recipe. Following written and oral directions and accurately timing themselves forms the basis of this lesson.

Elementary schoolers explore states of matter by concentrating on the ways in which water moves between its solid, liquid, and gaseous states in a variety of Earth environments. Learners interpret these movements through dance. The...

I scream, you scream, we all scream for ice cream! Even high schoolers enjoy making ice cream. This laboratory exercise has them record the temperature changes throughout the process of liquid becoming solid, graph the results, and...

Students polish pennies. In this Science lesson, students experiment with cleaning the oxidation off of pennies with a variety of liquids. Students record their observations.

In this heat worksheet, students determine the heat gained or lost when matter changes phases. Students review the energy flow through ecosystems by comparing trophic levels and food webs. This worksheet has 10 fill in the blank, 5 short...

In this states of matter worksheet, students read a 2 page article on the 5 states of matter, answer statements with multiple choice answers, fill in 4 fill in the blank statements and 3 true or false statements about the 5 states of...