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Write the word and chemical equations for the reactions shown in the models.

Chemistry

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Step-by-step solution

3 steps

Here are the equations deciphered from the models:

Part a· 1 step

  1. Identify reactants and products from the model using the key.

    Reactants: One black circle (Carbon, C) and one molecule of two white circles (Hydrogen, H₂).
    Products: One molecule of one black circle bonded to two white circles (Methylene, CH₂).

Part a(i)

Word equation

Carbon + Hydrogen → Methylene

Part a(ii)

Chemical equation

C+H2→CH2\text{C} + \text{H}_2 \rightarrow \text{CH}_2

Part b· 1 step

  1. Identify reactants and products from the model using the key.

    Reactants: One molecule of one purple circle bonded to four white circles (Potassium tetrahydride, KH₄) and one molecule of one green circle bonded to two white circles (Dihydrogen chloride, ClH₂).
    Products: One molecule of one purple circle bonded to two white circles (Potassium dihydride, KH₂), one molecule of one green circle bonded to two white circles (Dihydrogen chloride, ClH₂), and two separate white circles (Hydrogen atoms, 2H).

Part b(i)

Word equation

Potassium tetrahydride + Dihydrogen chloride → Potassium dihydride + Dihydrogen chloride + Hydrogen atoms

Part b(ii)

Chemical equation

KH4+ClH2→KH2+ClH2+2H\text{KH}_4 + \text{ClH}_2 \rightarrow \text{KH}_2 + \text{ClH}_2 + 2\text{H}

Part c· 1 step

  1. Identify reactants and products from the model using the key.

    Reactants: One molecule of one black circle bonded to four white circles (Methane, CH₄) and two molecules of two red circles bonded together (Oxygen, 2O₂).
    Products: One molecule of one black circle bonded to two red circles (Carbon dioxide, CO₂) and two molecules of one red circle

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