There are many interactions among living things and their surroundings. By completing a reading, scholars learn about the Earth, the moon, and the sun and how they relate to the solar system. They also investigate the basics of physical...

The cycle of energy is important to many different systems on Earth. Scholars use questioning and observation to investigate the differences between renewable and non-renewable resources and how they relate to global changes. They...

Find out about the three states of matter: solids, liquids, and gases.

An eBook containing information regarding states of matter as it applies to celestial bodies and a universe.

From a chapter on Fluid Statics in a Physics textbook. This introductory section of the chapter covers the three common phases of matter, their physical properties, and how atoms are arranged in solids, liquids, and gases. Includes a...

Find out how water can exist in the three different pahses of matter.

With an overview of the various properties of the states of matter, this 18 page pdf file provides a series of topics related to liquids including special physical properties of liquids, changes of state, and more.

Often we find that different phases of pure substances can exist in equilibrium with one another. Let us consider an important gedankenexperiment (Latin-German for "thought experiment") in which we boil water. Ordinary water boiling is...

An interactive guide to the basics of solids, liquids, and gases. Wonderful pictures show the makeup of each and how the particles move in these states of matter.

Read about solids, liquids, and gases, and find out about the phases of matter.

Take on this self-guided advanced level e-text, and learn about the chemical and physical structure of liquids and solids.

Atoms are very, very small. Atoms are so small that it is often said that there are as many atoms in a single grain of sand as there are grains of sand on all of the world's beaches - certainly a difficult thing to prove, but you get the...

Examine the link between molecular motion and energy. Observe the movement of a molecule at room temperature. Learn about the different types of molecular motion.

A page describing (in part) the distinction between energy, temperature and heat. Includes a graphic illustrating the quantity of energy needed to transform water between various states. Methods of thermal energy transfer (convection,...

This digital textbook covers core chemistry concepts and includes interactive features, real-world examples, and videos.