When silicon dioxide (SiO2) reacts with sodium hydroxide (NaOH), a chemical reaction takes place where the NaOH breaks down the SiO2 to form sodium silicate (Na2SiO3) and water (H2O). This reaction is known as a neutralization reaction, where the base (NaOH) reacts with the acid (SiO2) to form a salt (Na2SiO3) and water.
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