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Chemical Reactions

How do you know a chemical reaction has taken place?. Chemical Reactions. Evidence of chemical reactions. When mixing 2 chemicals together – how do you know if a reaction occurs? Create a gas Change color Releases heat (feels hot) or absorbs heat (feels cold)

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Chemical Reactions

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  1. How do you know a chemical reaction has taken place? Chemical Reactions

  2. Evidence of chemical reactions When mixing 2 chemicals together – how do you know if a reaction occurs? • Create a gas • Change color • Releases heat (feels hot) or absorbs heat (feels cold) • Create a precipitate (solid made from 2 clear liquids)

  3. Copy each chemical equation. Balance & Classify each equation. Demo Day Reactions

  4. H2O2----> H2O + O2 MnO2 Copy: • Write the phases of matter • Balance • Classify • Evidence of a chemical reaction

  5. Mg + HCl H2 + MgCl2 + heat Copy: • Write the phases of matter • Balance • Classify • Evidence of a chemical reaction

  6. Mg + O2MgO + light Copy: • Write the phases of matter • Balance • Classify • Evidence of a chemical reaction

  7. Cu + AgNO3 CuNO3 + Ag Copy: • Write the phases of matter • Balance • Classify • Evidence of a chemical reaction

  8. Pb(NO3)2+ KI  KNO3 + PbI2 Copy: • Write the phases of matter • Balance • Classify • Evidence of a chemical reaction

  9. HC2H3O2+ NaHCO3 NaC2H3O2 + H2O + CO2 Copy: • Write the phases of matter • Balance • Classify • Evidence of a chemical reaction

  10. Ba(OH)2+ NH4Cl  NH3 + H2O + BaCl2 Copy: • Write the phases of matter • Balance • Evidence of a chemical reaction

  11. CH4+ O2 CO2 + H2O Copy: • Write the phases of matter • Balance • Classify • Evidence of a chemical reaction http://www.youtube.com/watch?v=gXcug7RqPgs

  12. Al + HCl Copy: • Predict the products • Write the phases of matter • Balance • Classify • Evidence of a chemical reaction

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