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Catabolic reactions give out energy.They are exergonic. In a catabolic reaction large molecules are broken down into smaller ones. For example, the reverse of the condesation reactions described above, i.e. hydrolysis reactions, are catabolic

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elements are made up of the same type of atom

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#5 in a chemical  reaction bonds are broken and formed atoms are rearanged

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#5 in a chemical  reaction bonds are broken and formed atoms are rearanged

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when bonds are broken energy is released w(exothermic) and when bonds are formed energy is  taken in (endothermic) Further explain exothermic and endothermic and give examples of each

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Question 7

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Precipitation is the creation of asolid from a solution. When the reaction occurs in a liquid solution, the solid formed is called the 'precipitate'. The chemical that causes the solid to form is called the 'precipitant'. ... Sometimes the formation of a precipitate indicates the occurrence of a chemical reaction.

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Gas Production is Natural gas burns more cleanly than other fuels, such as oil and coal. Because burning natural gas produces both water and carbon dioxide, it produces less carbon dioxide per unit of energy released than coal, which produces mostly carbon dioxide.

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As the altitude increases the number of air molecules decreases

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#5 in a chemical reaction the element present in the reactants are the same as the elements in the products.

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#5 in a chemical reaction the element present in the reactants are the same as the elements in the products.

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reactants and products can be elements or compounds depending on the reaction taking place.

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hey

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Potassium has the atomic number of 19. It has the atomic number of 19 because it has 19 protons.

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The photosynthesis in a plant converts the solar energy into chemical energy. It does this by using electrons and protons from water.

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The chemical equation: 12H20+6CO2+light energy=C6H12O6+6H2O+6O2.

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The Nucleus is the big yellow circle.
The Protons are the red circles.
The Neutrons are the green circles.

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the smallest form of an element is an atom

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Combustion is a rapid chemical combination of a substance with oxygen, involving the production of heat and light.

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#5 in a chemical reaction bonds are broken and formed and atoms are rearranged.

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#5 in a chemical reaction bonds are broken and formed and atoms are rearranged.

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answer: the atoms and molecule produced by the reaction called products.

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If you add another oxygen it becomes hydrogen Peroxide 

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If you add another oxygen it becomes hydrogen Peroxide 

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hi

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Plants absorb sunlight, they use that energy to produce glucose from carbon dioxide and water. The process is called photosynthesis.

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Hue,intensity,value

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#5 the number of atoms is the same before and after a reaction.(left side is = to the right side in atom numbers) Write an equation as  evidence of this - show the number of atoms on each side of the reaction.

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#5 the number of atoms is the same before and after a reaction.(left side is = to the right side in atom numbers) Write an equation as  evidence of this - show the number of atoms on each side of the reaction.

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The changing of color of a substance is not necessarily an indicator of a chemical change.

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colo