Chemical Reactions and Equations _LS_2

Aluminium + Copper chloride Aluminium chloride + Copper

• Ca(OH)₂+CO₂ → CaCO₃ + H₂O

• 2Al(s)+3CuCl2​(aq) → 2AlCl3​(aq)+3Cu(s) 

• 2Mg(s) + O₂(g) → 2MgO(s)

• Zn(s) + H₂SO₄(aq) → ZnSO₄(aq) + H₂(g) ↑

Ca(OH)₂ + ……….—–> CaC0₃ + H₂0

• CO2
• H2O
• Ca
• NaCl

NaOH +....... Na2S04 + H20

• 2NaOH + H2SO4

  -----> Na2S04 + 2H2O

• NaOH( aq) + HCl(aq) → NaCl(aq) + H2O( l)

• 2NaOH + CO2 → Na2CO3 + H2O

• 2Al( s) + 6NaOH(aq) → 3H2(g) + 2Na3AlO3(aq)

Ca(OH)2 +.... CaC03 + H20

• Ca(OH)2 + CO2 CaCO3 + H2O

• Ca + 2H2​O → Ca(OH)2​+H2​

• Ca(OH)2 + 2HNO3 → Ca(NO3)2 + 2H2O. 

• Ca3 (PO4)2 (aq) + H3PO4 (aq) → Ca(H2PO4)2 (aq)

Complete the sentence.

During a chemical reaction, atoms ________.

• can appear

• can disappear

• get rearranged

• stop moving and vibrating

What is the Law of Conservation of Mass?

• It states that matter cannot be created or destroyed.

• It states that energy cannot be created or destroyed.

• It states that matter can be created or destroyed.

• It states that sound can be created or destroyed.

Correct and balance the following equations:

Ca + __H20 ----> Ca(OH)2 + H2

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Correct and balance the following equations:

Ca + 2H20 ----> Ca(OH)__ + H2

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Correct and balance the following equations:

N__ + 3H2 ----> 2NH3

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Correct and balance the following equations:

N2 + ___H2 ----> 2NH3

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