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A new substance is the molecules and atoms made by the reaction that produced new products with the old products

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CaCO3 + (CH4)
This is the chemical equation of an egg being cooked. When eggs get cooked they turn from a liquid yolk to a solid egg causing it to be a new substance.

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Fizz is produce bubbles of gas and make a hissing sound. (Google)

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This is a egg starting as a yolk and turning into a new substance as a egg. This is a chemical reaction because the heat and the energy from the fire turn mix with the yolk into a cooked and a fried egg. 

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This is a egg starting as a yolk and turning into a new substance as a egg. This is a chemical reaction because the heat and the energy from the fire turn mix with the yolk into a cooked and a fried egg. 

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Temperature is expressing if something is hot or cold. It can be measured with a thermometer and a scale. Temperature is measured in either celsius or fahrenheit.

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A solid is a firm and a shape with all the molecules tightly packed together. it has a identified shape and volume.

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3NaHCO3 + C6H8O7 → C6H5Na3O7 + 3CO2 + 3H2O

This is the chemical equation for the alka seltzer tablet and when water are mixed. The fizz is carbon dioxide.

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This is an Alka Seltzer Tablet put in water and it created fizz and Bubbles in the water. When fizz or bubbles in made it is a new substance that is forming which causes it to be a chemical reaction.

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This is a Bath Bomb placed in water causing there to be a chemical reaction. This is a chemical reaction because there is fizz when the bath bomb and water were combined.

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NaHCO3 + C6H8O7 --------> 3 CO2 + C6H5Na3O7 + 3 H2O.

This is the chemical equation for a bath bomb when put in water. The fizz that is created when the bath bomb is in the water is also carbon dioxide.

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https://www.google.com/search?q=what+is+fizz&rlz=1CAKABJ_enUS814US816&oq=what+is+&aqs=chrome.0.69i59j69i60l3j69i57j69i61.919j0j9&sourceid=chrome&ie=UTF-8&safe=active&ssui=on

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Aroma is an oder, scent, and or smell that is chemically combined.

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When you add baking soda to wet ingredients such as butter in the cookie batter, it reacts when the CO2 is in the oven. It gives off energy and heat to the cookie dough which mixes together and has aroma which was not there before.

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The aroma was created when they cookies were baking in the oven. The aroma started after they were put in the oven which is showing that the aroma was not there in the begging. Aroma is a chemical reaction which makes cookies baking a chemical reaction.

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This is bacon when it is already chemically combined. It was chemically combined when the bacon and the sugars heat up and get energy that causes the bacon to smell and have aroma.

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This is a hand warmer that is feels like a packet with beads in the inside. The inside of a hand warmer chemically reacts when it is shaken along when it is exposed with air.

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H2O2 -----> H2O + O2
This is the chemical equation when a hand warmer is shakan. The hand warmer turns into a different temperature it goes from room temperature to hot or warm. That is an example of a chemical equation because the temperature is different.

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Instant ice packs are also another temperature change. They started as a pouch with as it seems crushed up ice but is really not. It is water compounds and ammonium nitrate and when those mix they create a chilly or cold feeling in the ice pack.

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Rust forming is a solid that was a chemical reaction. Before it was a nail and when moisture or wetness in the air or if it was on the nail and than exposed to oxygen it forms rust. That is a new solid that is on the nail that was not there beforee

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Color is the way the light reflects off the eye showing different characteristics of something

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Fireworks are an example of color change. In the box they look like a black powder until they shoot up in the sky and they are loud and have different colors with different shapes.

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4Fe + 3O2 → 2Fe2O3

This is the chemical equation when rust forms. Rust is formed when oxygen and moist air mix together.

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When the firework is mixed with fire and oxygen it makes an explosion in the sky that is a firework. The color changes from in the box looking like a black powder to a colorful bang in the sky.

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Droplets of phenolphthalein are added to sodium hydroxide creating pink droplets when pink was never in the beginning.

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Roasting a marshmallow is also a chemical change. When the sugar in the marshmallow are changing into carbon. The sugars than turn into water molecules which mixes with carbon causing the carbon to evaporate and burn the marshmallow. That is because when water and carbon mix, carbon evaporates and the water molecules produce a burn on the marshmallow.

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This is the silver nitrate and sodium chloride mixed together creating a solid.

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This is the chemical equation for a marshmallow being roasted in the fire. It turns into a new substance of being a different color. The color goes from white to either a orange or brown color. Also, it was a hard and round substance and after it goes in the heat or the fire than it becomes a squishy and soft substance than is not a solid shape it can be put in a smore for example and can be mushed in the smore so it is not

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AgNO3+ NaCl
This is the chemical equation when silver nitrate and sodium chloride are mixed together. There is a different substance from when it started. It was a liquid and it turned into a slime substance.

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There is different temperature before the ice pack is used and after. Once the bag is shaken the bag gets cold and compresses into ice in the bag. The water molecules form together created a solid ice cube in the bag when it is shaken. it is a different temperature in the bag, the pack is cold and before it was room temperature this is a chemical change.

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C20H14+NaOH = (C20H12)4) 2+H2+2H20

This is the chemical equation is when phenolphthalein and sodium hydroxide were mixed together. When they were mixed together they made a pink color that was not there before which is a chemical reaction.

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This is the chemical equation when bacon is made. The aroma was not there when it was being made and when it was being made an aroma was created.