Chemistry9 review4 p
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This document provides a chemistry review covering topics like chemical reactions, chemical equations, reactants and products, and types of reactions. It asks the student to identify reactants and products, balance and classify chemical equations, and write equations for described reactions. Key concepts covered include signs of a chemical reaction, how to increase reaction rate, what occurs during a reaction, definition of a chemical equation, precipitate, endothermic and exothermic reactions, conservation of mass, subscripts, coefficients, and bond energy.
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The document provides a chemistry review covering topics such as chemical reactions, equations, reactants and products. It asks the reader to identify reactants and products, classify reaction types, balance equations, and write equations for described reactions. Key concepts covered include signs of chemical reactions, increasing reaction rates, conservation of mass, subscripts, coefficients, and endothermic/exothermic reactions.
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Here are some potential next steps based on the findings:
- Further research different types of chemical reactions like displacement, double displacement, oxidation-reduction, etc. to gain a deeper understanding of each.
- Practice writing balanced chemical equations for various reactions to strengthen skills in this area. Identifying the reactants, products, and coefficients is an important part of understanding chemical changes.
- Explore applications of chemical reactions in different contexts like cooking, medicine, industry, environment, etc. to see the relevance of chemistry concepts.
- Design experiments to observe chemical reactions firsthand in the lab. Seeing reactions occur can help cement conceptual understanding. Safety should always be the top priority for any experiments.
- Teach others about
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✴️✔️ Do 𝐒𝐔𝐁𝐒𝐂𝐑𝐈𝐁𝐄 to the channel for more updates and hit that like button!
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- 2. Signs that indicate that a chemical reaction is taking place.
- 3. How can we increase the rate of a chemical reaction?’
- 4. What happens during a chemical reaction?
- 5. What is a chemical equation?
- 6. What is a precipitate?
- 7. What is an endothermic reaction?
- 8. What is an exothermic reaction?
- 9. State the Law of Conservation of Mass, and the name of the scientist who discover it.
- 10. What is a subscript?
- 11. What is a coefficient?
- 12. What are the reactants?
- 13. What are the products?
- 14. What is bond energy?
- 15. IN THE FOLLOWING CHEMICAL EQUATIONS, IDENTIFY THE REACTANTS AND THE PRODUCTS:
- 16. 160020080645001. CaO + O2 CO2 + H2O
- 17. 148590080645002. C6H12O6 C2H5OH + CO2
- 18. 205740088265003. Al2(SO4)3 + 6KOH 2Al(OH)3 + 3K2SO4
- 19. INDICATE HOW THE FOLLOWING SYMBOLS ARE READ IN A CHEMICAL EQUATION:
- 20. 91440076200001.
- 21. 2. +
- 22. 914400111760
- 24. 205740099695Fe2O3 + C Fe + CO
- 25. 2057400120650Fe + O2 Fe2O3
- 26. 1943100106680Al + Br2 AlBr3
- 27. 251460092075Pb(NO3)2 + NaCl PbCl2 + NaNO3
- 28. CLASSIFY THE FOLLOWING REACTIONS AS: SYNTHESIS, DECOMPOSITION, SIGLE REPLACEMENT, DOUBLE REPLACEMENT, COMBUSTION, EXOTHERMIC OR ENDOTHERMIC.
- 29. 1143000876302Mg + O2 2MgO____________________________________
- 30. 137160083820C6H12O6 + O2 CO2 + H2O + E____________________________________
- 31. 148590083820CO2 + H2O + E C6H12O6 + O2____________________________________
- 32. 91440090170CuCO3 CuO + CO2____________________________________
- 33. 137160083820AgNO3 + NaCl AgCl + NaNO3____________________________________
- 34. 102870083820C6H12O6 2C2H6O + 2CO2____________________________________
- 35. 114300083820Br2 + BaI2 BaBr2 + I2____________________________________
- 36. 114300083820CH4 + 2O2 CO2 + 2H2O____________________________________
- 37. WRITE A CHEMICAL EQUATION FOR THE FOLLOWING REACTIONS:
- 38. Solid lead reacts with oxygen gas to produce lead oxide (PbO2)
- 39. Heating solid aluminum oxide (Al2O3) produces solid aluminum and oxygen gas
- 40. Dinitrogen pentoxide in the presence of platinum as a catalyst is burned to form nitrogen gas (N2) with oxygen gas (O2)
- 41. Aqueous solutions of potassium fluoride (KF) and calcium nitride (Ca(NO3)2) react to form a precipitate of calcium fluoride (CaF2) and aqueous potassium nitride (KNO3)
- 42. Solid phosphorus reacts with chloride gas to form solid phosphorus pentachloride