chemical equation hdjAHIUFHAWNkhwid.pptx

Science

1. CHEMICAL EQUATION

2. is written in the form of an equation. in equation contains the ingredients on the left (reactants) and to the right of the arm.

3. _____ in writing the equation, you get Reactants Reactants Products

4. For example, you want to make pancakes, you have to follow the equation below on how to make pancakes Milk + eggs+ pancakes mix pancake

5. You have to know how much of the reactants will give how much of a product 2 cups of rice + 2 cups of water 4 cups boiled rice

6. In preparing boiled rice, you need to prepare the proper amounts of reactions to yield proper amounts of products in a chemical formula.

7. Chemical equations, you need to prepare. When methane is made to react with oxygen, itproduce,CO 2, H 2 O, and heat. The figure below will show the reaction at atomic level.

8. 20 2 CO 2 2H 2 o 2 Molecules React 1 Molecule 2 Molecules Oxygen Carbon Dioxide Water

9. In writing an equation, indicate the state of the reactants and the products. Write (s) sentence is a solid, (l)if liquid, and (g) if gas. Write ( aq ) if the substance is in an aqueous som .

10. Examine the following equation. Zn (s) + 2HCI ( aq ) ZnCL 2( aq ) + H 2(g) The molecule of solid zinc reacts with two molecules of aqueous hydrogen chloride to describe of aqueous ZnCI 2 and one molecule of hydrogen gas

11. It is therefore impossible to determined the exact location of an electron. Scientists can only predict the probable location of an electron. It is based on how much energy it has.

12. Exercise Count the number of atoms in the reactant side and the product side of the equation. A. C 4 H 8 + 60 2 4CO 2 + 4H 2 O B. Zn (s) + CuSO 4 Cu + ZnSO 4 C. BaSO 4 + 2NaCI Na 2 SO 4 + BaCl 2

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