Phet reactants products and leftovers. Phet_Reactants_Products_and_Leftovers_Exploring_Chemical_blog.sigma-systems.com 2023-01-01

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Phet reactants, products, and leftovers is a concept that is important in understanding chemical reactions and the transformation of matter.

When two or more substances interact, they may undergo a chemical reaction in which they form new substances. These new substances are called products. The substances that are present at the beginning of the reaction are called reactants. Any substance that remains after the reaction has occurred is called a leftover.

In a chemical reaction, the reactants are transformed into the products through a series of chemical processes. The amount of reactants and products can be represented by a chemical equation, which shows the reactants on the left side and the products on the right side. The equation is balanced, meaning that the same number of atoms of each element is present on both sides of the equation.

For example, the combustion of methane (CH4) can be represented by the following chemical equation:

CH4 + 2O2 -> CO2 + 2H2O

In this equation, methane (CH4) and oxygen (O2) are the reactants, and carbon dioxide (CO2) and water (H2O) are the products. There are no leftovers in this reaction because all of the reactants are used up to form the products.

It is important to understand the concept of reactants, products, and leftovers because it helps us to understand the transformation of matter and the role that chemical reactions play in this process. By understanding the reactants, products, and leftovers in a chemical reaction, we can predict the outcome of the reaction and design experiments to test our predictions. This is a crucial skill for scientists and engineers who are working to understand the world around us and develop new technologies.

In conclusion, the concept of reactants, products, and leftovers is an essential part of understanding chemical reactions and the transformation of matter. By understanding the reactants, products, and leftovers in a chemical reaction, we can predict the outcome of the reaction and design experiments to test our predictions. This is a crucial skill for scientists and engineers who are working to understand the world around us and develop new technologies.

Reactants, Products, and Leftovers blog.sigma-systems.com

phet reactants products and leftovers

For example, when I combined 4H2 molecules and 2O2 molecules into 4H2O molecules all the atoms I started with were the atoms I ended with. Why did you not get any leftovers with the above information? All the matter I started with was there when I was finished physically changing it into a sandwich. Predict what would change about your number of sandwiches and your thinking if you had the same 6 pieces of bread and 4 slices of cheese, but the sandwich is made like the picture on the right? ReAcTanTS and PrOducTS — Unscramble the bolded, capitalized letters. What are the leftovers? Draw a picture showing how mass is conserved during a chemical change. Which word means stop? Draw one sandwich you made below. If one follows the formula exactly or if one doubles or triples the formula, there will be no leftovers.


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PhET: Reactants, Products and Leftovers

phet reactants products and leftovers

They are all just leftover. The reactants all appear in the products b. You have bread and reactants and the product still shows cheese and cheese before and you have bread and cheese bread. Explain using: - reactant amounts that gives you leftovers and -reactant amounts that do not give you leftovers. Is making a sandwich a chemical or physical change? Chemical or Physical Because… Water is exactly the same as hydrogen and oxygen The atoms rearranged themselves and the water is something different than Oxygen and Hydrogen All the Hydrogen and Oxygen in the reactants appears in the products as well 11. When I made my sandwich, I used 3 pieces of bread and 3 pieces of cheese.

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Reactants, Products and Leftovers

phet reactants products and leftovers

But after splitting water, the hydrogen gas molecules explode in a flame and the oxygen molecules burn in the flame. . Predict without using the sim how many cheese sandwiches, as defined by the picture to the right, you can make if you have 6 pieces of bread and 4 slices of cheese. In a bit you are going to add four pieces of bread and two cheese, how many sandwiches will you make? No atoms were created or destroyed. Use Reactants, Products, and Leftovers simulation to create your own sandwiches and then see how many sandwiches you can make with different amounts of ingredients. Choose your own number of bread and cheese before the reaction and document what is your product and the leftovers.

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Phet Reactants Products and Leftovers Exploring Chemical blog.sigma-systems.com

phet reactants products and leftovers

Start with 3 breads and 2 cheese. Examine the Sandwich formula given at the top, what and how much of those ingredients are needed to make a sandwich? How would your life be different if there were no chemical reactions? Where are the reactants? In this simulation what do you think the bread and cheese separately represent, the atom or the molecule? Add a slice of cheese. All the cheese and bread I started with made all the cheese and cheese sandwiches I ended with. Include the formula at the top. The wick turns from a white string to black ash. They were just rearranged into new molecules.

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Phet_Reactants_Products_and_Leftovers_Exploring_Chemical_blog.sigma-systems.com

phet reactants products and leftovers

In this simulation what do you think the sandwich represents, the atom or the molecule? Is making a sandwich a chemical or physical change? Trial Number of Bread Before Reaction of Cheese Before Reaction of Sandwiches After Reaction Describe of Leftovers After Reaction 1 2 3 4 5 7. Play the game and write your scores below make sure to fill in the bubble for show all : Level 1: Level 2: Level 3: Answers 2. Cellular respiration and burning wood are both chemical reactions. What are the leftovers? None of the reactants appear in the products Real Reaction Click on the Molecules tab at the bottom of the PhET. Learning Goal: I understand that chemical changes make new chemicals new molecules while physical changes just rearrange the old chemicals. Test your learning: 2. Yes or No Why are atoms conserved or not conserved use examples from the lab? Explain your understanding: 2.

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Reactants Products and Leftovers blog.sigma-systems.com

phet reactants products and leftovers

Formulas tell me how to combine reactants so that I will have no leftovers. Choose your own number of bread and cheese before the reaction and document what is your product and the leftovers. Examine the Sandwich formula given at the top, what and how much of those ingredients are needed to make a sandwich? Do you have different ideas that would help predict the number of sandwiches you could make? Try the other two chemical reactions making ammonia and combusting methane. Lecerio HS MS Other Physics Forces and Motion: Basics HTML5 Forces and Motion: Basics Friction Quantitative Lab Steve Banasiak HS Lab Guided Physics Forces and Motion: Basics HTML5 Forces and Motion: Basics Investigation Bruce Spurrell HS MS Guided Lab HW Physics Forces and Motion: Basics HTML5 How does mass effect the speed of a forced object? Run the Reactants, Products and Leftovers PhET. Explain how this picture is evidence that mass is conserved when you make a sandwich. Predict without using the sim how many cheese sandwiches, as defined by the picture to the right, you can make if you have 6 pieces of bread and 4 slices of cheese.

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Browse Activities

phet reactants products and leftovers

What are the leftovers? It is a Physical Change because the reactants stay as they are even though they make a sandwich they are still meat, bread, and cheese. Where are the reactants? Even though chemical changes make new molecules, the atoms are conserved. Are the atoms conserved during a chemical change even though new molecules are made? Are the atoms conserved during a chemical change even though new molecules are made? Look at your picture for 6. How many products are made? What words can you find? I started out with 3 pieces of bread and 5 pieces of cheese. Now have 8 breads and 3 cheese.

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Phet: Reactants, Products & Leftovers

phet reactants products and leftovers

In this simulation what do you think the sandwich represents, the atom or the molecule? How many of the product was produced? Learning Objectives: I know reactants are at the start of a chemical reaction and products are after the chemical reaction has stopped. Are atoms conserved during a chemical change? The bread and cheese do not combine. They are all products 5. Try the other two chemical reactions making ammonia and combusting methane. The reaction for the combustion of methane is very similar to the cellular respiration in your cells as well as the chemical reaction that occurs when we burn wood for a fire. Can you get a perfect score on each level? Where are the reactants? Now try 8 breads and 8 cheese.

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phet reactants products and leftovers

Use evidence from the definitions above and your vocab or from the PhET to support your answer. Is making water a chemical or physical change? Making water is a chemical change. Marley Carhart K-5 HW Lab Guided Physics Forces and Motion: Basics HTML5 Forces and Motion: Basics Balanced and Unbalanced Forces - What Causes Acceleration Jeremy Lessard MS Lab Guided Physics Forces and Motion: Basics HTML5 Dynamics Gr11 Unit End Exploration John Mohr UG-Intro HS Demo HW Guided Physics Forces and Motion: Basics HTML5 Gravity Force Lab HTML5 Hooke's Law HTML5 Applied Forces and Friction and a Review of Newton's 1st and 2nd Law Scott Clements HS Guided Physics Forces and Motion: Basics HTML5 Modeling Paradigm Lab- 2nd Law Tom Erekson HS Lab Physics Forces and Motion: Basics HTML5 Student Guide for PhET - Forces Motion in html5 Brian Libby MS HS Guided HW Physics Forces and Motion: Basics HTML5 Forces and Free Body Diagram Lab Kara Quinlan HS Guided Lab Physics Forces and Motion: Basics HTML5 Forces and Motion: Basics Introduction to Forces and Newton's Laws Michael Pennisi HS Lab Physics Forces and Motion: Basics HTML5 Forces and Motion Raquelyn Maglinao and Faye Nathalie Montes MS Lab Physics Forces and Motion: Basics HTML5 Force and Motion Basics - Second grade Anne Mason K-5 Lab Physics Forces and Motion: Basics HTML5 Forces and Motion: Basics Kinematics Wang Yunhe HS Lab Physics Calculus Grapher Equation Grapher Forces and Motion Forces and Motion: Basics HTML5 Forces and Motion: Basics Forces in 1 Dimension Fraction Matcher Ladybug Motion 2D Motion in 2D The Moving Man Pendulum Lab Plate Tectonics Projectile Motion The Ramp Ramp: Forces and Motion Vector Addition Compendio de Actividades e ILDs basadas en simulaciones PhET Karen Y. It is a Chemical Change because the reactants make something new with different properties and characteristics called a sandwich. Remember, atoms give matter its mass. Use evidence from the PhET to support your answer. What are the leftovers? How many products are made? How would your life be different? Which word means start? Use the simulation to check your answer.

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