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In this activity on page 10 of the PDF, learners detect the amount of energy that can flow through a sodium chloride electrolyte solution with a light sensor.

Learners create three solutions with different levels of salinity. They compare the density of these solutions by coloring them and layering them in a clear plastic cup and in a soda bottle.

In this chemistry activity (page 3 of the PDF), learners will learn about crystals by growing their very own.

In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.

In this investigation, learners plant seeds in a 2-liter bottle filled with soil that is connected to a water source below. Over the next few weeks, learners observe how the plants grow.

Learners carefully look at four known household crystals.

In this activity, learners are challenged to lift a floating ice cube out of a glass of water using just one end of a piece of string.

In this chemistry activity (page 1 of the PDF), learners will observe a physical change.

In this activity, learners design a crushing test and discover that identifying and controlling the variables may be difficult.

This activity about density provides instructions for making a miniature "lava lite" with just salt, oil, water, and food coloring.

Learners are challenged to create solutions that conduct electricity and make a buzzer buzz (or an LED light up).

In this simple activity (on page 2 of the PDF), learners make a crystal garden using salt, water, and a brick.

In this activity, learners will explore how a hydrometer works by building a working model and conducting experiments.