Changing States of Matter by Ron Kurtus - Succeed in Understanding Physics. SfC Home > Physical Science > Physics > Matter > Explanation of changing the solid, liquid and gas states of matter by Ron Kurtus - Succeed in Understanding Physics.
Key words: heat, temperature, energy, molecular forces, water, ice, steam, molten metal, Helium, melting, freezing, boiling, condensation, sublimation, deposition, pressure, Ron Kurtus, School for Champions. Copyright © Restrictions By Ron Kurtus (revised 29 March 2012) A material will change from one state or phase to another at specific combinations of temperature and surrounding pressure. Names such as boiling and freezing are given to the various changes in states of matter. Questions you may have include: What are the changes in states called? This lesson will answer those questions.
Useful tool: Metric-English Conversion. Matter: Changing States. All matter can move from one state to another.
It may require extreme temperatures or extreme pressures, but it can be done. Sometimes a substance doesn't want to change states. You have to use all of your tricks when that happens. To create a solid, you might have to decrease the temperature by a huge amount and then add pressure. Some of you know about liquid nitrogen (N2). Science Experiments You Can Do At Home or School. Matter: Chemical vs. Physical Changes. It is important to understand the difference between chemical and physical changes.
Some changes are obvious, but there are some basic ideas you should know. Physical changes are usually about states and physical states of states. Chemical changes happen on a molecular level when you have two or more molecules that interact. Chemical changes happen when atomic bonds are broken or created during chemical reactions. When you step on a can and crush it, you have forced a physical change. When you melt an ice cube (H2O), you have a physical change because you add energy. Chemical changes happen on a much smaller scale. Melting a sugar cube is a physical change because the substance is still sugar. Iron (Fe) rusts when it is exposed to oxygen gas in the air. Some chemical changes are extremely small and happen over a series of steps. The sugars glucose, galactose, and fructose all have six carbon atoms, twelve hydrogen atoms, and six oxygen atoms (C6H12O6).
American Chemical Society. Matter. Matter is everything around you.
Atoms and molecules are all composed of matter. Matter is anything that has mass and takes up space. If you are new to the idea of mass, it is the amount of stuff in an object. We talk about the difference between mass and weight in another section. Matter is sometimes related to light and electromagnetic radiation. Even though matter can be found all over the Universe, you will only find it in a few forms on Earth. You should know about solids, liquids, gases, plasmas, and one state called the Bose-Einstein condensate (BEC). What makes a state of matter? Molecules can move from one physical state to another (phase change) and not change their basic structure. So you're asking, "What is a chemical change?
" Chemical changes occur when the bonds between atoms in a molecule are created or destroyed. Fun Science Experiments for Kids - Cool Projects & Easy Ideas for Children. Diet Coke & Mentos Geyser Eruption. What you'll need: Large bottle of Diet Coke About half a pack of Mentos Geyser tube (optional but makes things much easier) Instructions: Make sure you are doing this experiment in a place where you won't get in trouble for getting Diet Coke everywhere.
Outside on some grass is perfect, please don't try this one in your family lounge!! Stand the Diet Coke upright and unscrew the lid. What's happening? Although there are a few different theories around about how this experiment works, the most favoured reason is because of the combination of carbon dioxide in the Diet Coke and the little dimples found on Mentos candy pieces. The thing that makes soda drinks bubbly is the carbon dioxide that is pumped in when they bottle the drink at the factory. Dropping something into the Diet Coke speeds up this process by both breaking the surface tension of the liquid and also allowing bubbles to form on the surface area of the Mentos. Fun Chemistry Facts for Kids - Elements, Atoms, Gas, Cool Chemicals.