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      <title>Signs of Chemical Changes by Karsen Emerick</title>
      <link>https://padlet.com/kemerick4/zkn8kahgam68zm69</link>
      <description>Explore the fascinating world of chemical changes through these 9 key indicators! Learn what we can see, what&#39;s happening at the molecular level, and discover real-world examples.</description>
      <language>en-us</language>
      <pubDate>2024-11-20 16:05:02 UTC</pubDate>
      <lastBuildDate>2024-11-20 16:05:10 UTC</lastBuildDate>
      <webMaster>hello@padlet.com</webMaster>
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      <item>
         <title>What We Can See</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492791</link>
         <description><![CDATA[When a chemical change involves a color change, we might see liquids or solids change from one color to another. For example, a clear solution might turn blue, or a white powder might turn yellow.]]></description>
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         <pubDate>2024-11-20 16:05:02 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492791</guid>
      </item>
      <item>
         <title>At the Molecular Level</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492796</link>
         <description><![CDATA[During a color change, the molecules are actually changing their structure. This new structure affects how they absorb and reflect light, which is why we see different colors.]]></description>
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         <pubDate>2024-11-20 16:05:03 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492796</guid>
      </item>
      <item>
         <title>Real World Examples</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492798</link>
         <description><![CDATA[1. Apples turning brown when cut<br>2. Copper turning green on old statues<br>3. Leaves changing color in fall<br>4. Bananas ripening from green to yellow]]></description>
         <pubDate>2024-11-20 16:05:03 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492798</guid>
      </item>
      <item>
         <title>What We Can See</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492810</link>
         <description><![CDATA[A precipitate is a solid that forms in a liquid during a chemical reaction. It looks like tiny particles floating or settling at the bottom of a container.]]></description>
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         <pubDate>2024-11-20 16:05:03 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492810</guid>
      </item>
      <item>
         <title>At the Molecular Level</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492827</link>
         <description><![CDATA[When two solutions mix, their molecules can react to form new compounds that don't dissolve in water. These insoluble compounds clump together and form visible solid particles.]]></description>
         <enclosure url="https://www.youtube.com/watch?v=34d5ofcRhbU" />
         <pubDate>2024-11-20 16:05:04 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492827</guid>
      </item>
      <item>
         <title>Real World Examples</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492828</link>
         <description><![CDATA[1. Hard water leaving mineral deposits in pipes<br>2. Stalactites forming in caves<br>3. Soap scum forming in bathtubs]]></description>
         <pubDate>2024-11-20 16:05:04 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492828</guid>
      </item>
      <item>
         <title>What We Can See</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492838</link>
         <description><![CDATA[An explosion is a very fast chemical reaction that releases energy suddenly. We see a burst of light, feel a shock wave, and hear a loud noise.]]></description>
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         <pubDate>2024-11-20 16:05:04 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492838</guid>
      </item>
      <item>
         <title>At the Molecular Level</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492843</link>
         <description><![CDATA[During an explosion, molecules break apart and recombine very quickly, releasing a lot of energy and creating rapidly expanding gases.]]></description>
         <enclosure url="https://upload.wikimedia.org/wikipedia/commons/5/5b/Methane-combustion.svg" />
         <pubDate>2024-11-20 16:05:05 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492843</guid>
      </item>
      <item>
         <title>Real World Examples</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492849</link>
         <description><![CDATA[1. Fireworks displays<br>2. Car engines running (tiny controlled explosions)<br>3. Volcanoes erupting<br>4. Baking soda and vinegar reaction]]></description>
         <pubDate>2024-11-20 16:05:05 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492849</guid>
      </item>
      <item>
         <title>What We Can See</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492857</link>
         <description><![CDATA[When a gas forms, we might see bubbles rising through a liquid, or a balloon inflate. Sometimes we can see vapor or smoke.]]></description>
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         <pubDate>2024-11-20 16:05:05 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492857</guid>
      </item>
      <item>
         <title>At the Molecular Level</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492872</link>
         <description><![CDATA[Molecules in the reaction combine to form new molecules that exist as a gas at room temperature. These gas molecules spread out to fill their container.]]></description>
         <enclosure url="https://www.youtube.com/watch?v=8Q710N4r6J4" />
         <pubDate>2024-11-20 16:05:06 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492872</guid>
      </item>
      <item>
         <title>Real World Examples</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492874</link>
         <description><![CDATA[1. Baking bread (yeast produces carbon dioxide)<br>2. Soda fizzing when opened<br>3. Plants producing oxygen during photosynthesis<br>4. Adding antacid tablets to water]]></description>
         <pubDate>2024-11-20 16:05:06 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492874</guid>
      </item>
      <item>
         <title>What We Can See</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492882</link>
         <description><![CDATA[Some chemical reactions produce light. This can appear as a glow, flash, or steady light emission.]]></description>
         <enclosure url="https://upload.wikimedia.org/wikipedia/commons/b/b4/Glowstick.svg" />
         <pubDate>2024-11-20 16:05:07 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492882</guid>
      </item>
      <item>
         <title>At the Molecular Level</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492886</link>
         <description><![CDATA[When molecules react, sometimes the energy is released as light. The electrons in the molecules jump to higher energy levels and then release light when they fall back down.]]></description>
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         <pubDate>2024-11-20 16:05:07 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492886</guid>
      </item>
      <item>
         <title>Real World Examples</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492888</link>
         <description><![CDATA[1. Glow sticks<br>2. Fireflies glowing<br>3. Light sticks used in camping<br>4. Some deep-sea creatures producing light]]></description>
         <pubDate>2024-11-20 16:05:07 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492888</guid>
      </item>
      <item>
         <title>What We Can See (or Smell!)</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492899</link>
         <description><![CDATA[While we can't see an odor, our nose can detect new smells that weren't there before the reaction. These can be pleasant or unpleasant.]]></description>
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         <pubDate>2024-11-20 16:05:07 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492899</guid>
      </item>
      <item>
         <title>At the Molecular Level</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492904</link>
         <description><![CDATA[New molecules formed in the reaction can be volatile (easily become gases). When these molecules reach our nose, they interact with special receptor cells that detect different smells.]]></description>
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         <pubDate>2024-11-20 16:05:07 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492904</guid>
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      <item>
         <title>Real World Examples</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492906</link>
         <description><![CDATA[1. Cooking food<br>2. Bread baking<br>3. Rotting food<br>4. Striking a match]]></description>
         <pubDate>2024-11-20 16:05:07 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492906</guid>
      </item>
      <item>
         <title>What We Can See</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492921</link>
         <description><![CDATA[In reactions that release heat (exothermic reactions), we might feel the container getting warmer, see steam, or notice bubbling.]]></description>
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         <pubDate>2024-11-20 16:05:08 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492921</guid>
      </item>
      <item>
         <title>At the Molecular Level</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492938</link>
         <description><![CDATA[When chemical bonds break and new ones form, sometimes extra energy is released as heat. The molecules move faster and bump into each other more.]]></description>
         <enclosure url="https://www.youtube.com/watch?v=eJXL0IrbtqE" />
         <pubDate>2024-11-20 16:05:09 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492938</guid>
      </item>
      <item>
         <title>Real World Examples</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492942</link>
         <description><![CDATA[1. Hand warmers activating<br>2. Burning wood in a campfire<br>3. Rusting iron<br>4. Chemical hot packs]]></description>
         <pubDate>2024-11-20 16:05:09 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492942</guid>
      </item>
      <item>
         <title>What We Can See</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492950</link>
         <description><![CDATA[In reactions that absorb heat (endothermic reactions), we might feel the container getting colder or see condensation forming on the outside.]]></description>
         <enclosure url="https://upload.wikimedia.org/wikipedia/commons/7/77/Endothermic_Reaction.png" />
         <pubDate>2024-11-20 16:05:09 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492950</guid>
      </item>
      <item>
         <title>At the Molecular Level</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492976</link>
         <description><![CDATA[These reactions need energy to happen. They take heat energy from their surroundings, making the molecules in the surroundings move more slowly.]]></description>
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         <pubDate>2024-11-20 16:05:10 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492976</guid>
      </item>
      <item>
         <title>Real World Examples</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492979</link>
         <description><![CDATA[1. Cold packs activating<br>2. Making ice cream with salt and ice<br>3. Photosynthesis in plants<br>4. Melting ice]]></description>
         <pubDate>2024-11-20 16:05:10 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492979</guid>
      </item>
      <item>
         <title>What We Can See</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492987</link>
         <description><![CDATA[When a new substance forms, we might notice different properties like texture, color, or state of matter that are different from the starting materials.]]></description>
         <enclosure url="https://upload.wikimedia.org/wikipedia/commons/b/b0/Chemical_precipitation_diagram_multilang.svg" />
         <pubDate>2024-11-20 16:05:10 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492987</guid>
      </item>
      <item>
         <title>At the Molecular Level</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492988</link>
         <description><![CDATA[The atoms in the original substances rearrange to form new molecules with different properties. It's like taking apart building blocks and putting them together in a new way!]]></description>
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         <pubDate>2024-11-20 16:05:11 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492988</guid>
      </item>
      <item>
         <title>Real World Examples</title>
         <author>kemerick4</author>
         <link>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492990</link>
         <description><![CDATA[1. Cake batter becoming cake<br>2. Paper burning to ash<br>3. Milk turning into cheese<br>4. Eggs cooking and becoming solid]]></description>
         <pubDate>2024-11-20 16:05:11 UTC</pubDate>
         <guid>https://padlet.com/kemerick4/zkn8kahgam68zm69/wish/3226492990</guid>
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