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Zachary Lopes - Chemistry Finals Comic Strip
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טקסט Storyboard
שקופית: 1
LAW OF CONSERVATION OF MASS CHEMICAL REACTIONS
שקופית: 2
"Let's start with a simple reaction. Here we have vinegar (acetic acid) and baking soda (sodium bicarbonate)."
"What happens when we mix them?"
Vinegar
Baking Soda
שקופית: 3
"Watch closely as we mix them."
Vinegar
Baking Soda
שקופית: 4
"That's carbon dioxide gas being released. But did the total mass change?"
"Wow, look at all those bubbles!"
Baking Soda
שקופית: 5
"Today, we're going to learn about chemical reactions and the law of conservation of mass."
LAW OF CONSERVATION OF MASS
"The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction."
"The mass of the reactants equals the mass of the products."
שקופית: 6
Vinegar + Baking Soda → Carbon Dioxide + Water + Sodium Acetate
"In our reaction, vinegar and baking soda are the reactants."
"They produce carbon dioxide, water, and sodium acetate as products."
שקופית: 7
CHEMICAL EQUATION:
NaCHO3 + HC2H3O2 → NaC2H3O2 + CO2 + H20
"Let's balance the equation."
"So, the number of atoms of each element is the same on both sides?"
שקופית: 8
CHEMICAL EQUATION:
NaCHO3 + HC2H3O2 → NaC2H3O2 + CO2 + H20
"Exactly! Remember, in every chemical reaction, the total mass of the reactants equals the total mass of the products."
"That makes sense now. Thanks, teacher!"
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