Changes in Matter
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Heat vs. Temperature Heat and temperature are two concepts that are often confused. They are related to each other because they are both related to the concept of thermal energy. As you may recall, thermal energy is the energy that a substance possesses due to the, kinetic energy, or motion of its molecules.
Intermolecular Forces Water is the only substance we routinely encounter as a solid, a liquid, and a gas. At low temperatures, it is a solid in which the individual molecules are locked into a rigid structure. As we raise the temperature, the average kinetic energy of the molecules increases, which increases the rate at which these molecules move.
Chem4Kids - States of Matter There are four main states of matter: solids, liquids, gases, and plasmas. Each of these states is also known as a phase. elements and compounds can move from one phase to another phase when special physical forces are present. One example of those forces is temperature. When temperature changes, the phase can change. Generally as the temperature rises, matter moves to a more active state.
Classifying Matter and Changes in Matter Matter is anything that has mass and volume. To understand changes in matter, you need to know what the sample of matter was like before the change and what it is like after the change. You also need to be able to describe and classify matter.
States of Matter Check out this cool site to see an animation on the states of matter. Click Gas, Liquid, or Solid to view the action of the particles up close.
Matter Check out this slide show on the states of matter.
ChemTutor: States of Matter Check out these tutorials on the states of matter.
Quia - Temperature vs. Heat Review temperature and heat from the HOT and COLD Lab.
Energy, Temperature, and Heat Check out this site for detailed explanations of the type of energy, forms of heat and more.
Metric System Temperature The degree Celsius (C) scale was devised by dividing the range of temperature between the freezing and boiling temperatures of pure water at standard atmospheric conditions (sea level pressure) into 100 equal parts. The kelvin (K) temperature scale is an extension of the degree Celsius scale down to absolute zero, a hypothetical temperature characterized by a complete absence of heat energy.
Boil Water with Shockwave! Run this experiment, changing the water amount, the starting water temperature, and the heating power. Enter how long you think it will take to boil the water [bring the water to 100c. The accuracy of your guess, as a percentage of the actual time, will be displayed.
Chem4Kids This is a comprehensive chemistry site covering Matter, Elements, Atoms and Reactions.
Acid Rain Acid rain is a serious environmental problem that affects large parts of the US and Canada. This section of the Web site provides information about acid rain's causes and effects, how we measure acid rain, and what is being done to solve the problem.
Classifying Matter Learn all about Mixtures, Compounds and Elements.
Chemical Reactions Chemical reactions happen all around us: when we light a match, start a car, eat dinner or walk the dog. A chemical reaction is the pathway by which two substances bond together.
Cool Stuff: Types of Reactions Chemists define many different classes of reactions; some of which can be recognized by their equations alone. A significant part of organic chemistry involves identifying and understanding different types of reactions involving organic compounds.
Physics 2000 Welcome to Physics 2000, an interactive journey through modern physics! Have fun learning visually and conceptually about 20th Century science and high-tech devices.
Chemistry Drill and Practice Tutorials Check out these drill and practice problems covering Matter & Measurement, Atoms & Elements, Molecules & Compounds and more!
Interactive Physics Energy makes the world go around, you might say. But what exactly is energy, anyway? Find out more!
The ABC's of Nuclear Science A brief introduction to Nuclear Science. Learn about the structure of the atomic nucleus and how the elements on the earth were produced.
Writing DEN: The CANDU Nuclear Reactor Read or hear audio information on the Candu Nuclear Reactor in the form of words, sentences or paragraphs. Each section contains an interactive quiz to test for comprehension.
Energy Transformation on a Roller Coaster A roller coaster ride is a thrilling experience which involves a wealth of physics. Part of the physics of roller coaster is the physics of work and energy.
Electricity and Magnetism Electricity is all around us, and with the help of some good friends we will understand it better. Some may ask, but wait, this section is called electricity and magnetism - so what about magnetism? Well once you've gone through our cosmic journey you will find out.
Magnets Magnets can be made by placing a magnetic material such as iron or steel, in a strong magnetic field. Permanent, temporary and electromagnets can be made in this manner.
Energy and Science Projects for Students Explore science projects online in the areas of Chemical Energy, Electricity, Water Energy, Solar Energy, Wind Energy and others.