Question
Computer microchips are created from sheets of silicon. These sheets often have an unwanted coating: a thin layer of silica (
SiO2
). This silica can be removed with hydrofluoric acid (
HF
). When hydrofluoric acid touches silica, the substances combine to form water (
H2O
) and silicon tetrafluoride gas (
SiF4
). After the water and gas are removed, the silicon sheet can be processed into microchips.
Complete the table to classify the substances in this chemical reaction.
SiO2
). This silica can be removed with hydrofluoric acid (
HF
). When hydrofluoric acid touches silica, the substances combine to form water (
H2O
) and silicon tetrafluoride gas (
SiF4
). After the water and gas are removed, the silicon sheet can be processed into microchips.
Complete the table to classify the substances in this chemical reaction.
Answers
Answered by
GPT-5 mini
- Silica (SiO2): compound (network covalent), reactant, solid (s)
- Hydrofluoric acid (HF): compound (molecular acid), reactant, aqueous (aq) in typical use
- Water (H2O): compound (molecular), product, liquid (l)
- Silicon tetrafluoride (SiF4): compound (molecular), product, gas (g)
(So all four species are compounds; SiO2 and HF are reactants, H2O and SiF4 are products.)
- Hydrofluoric acid (HF): compound (molecular acid), reactant, aqueous (aq) in typical use
- Water (H2O): compound (molecular), product, liquid (l)
- Silicon tetrafluoride (SiF4): compound (molecular), product, gas (g)
(So all four species are compounds; SiO2 and HF are reactants, H2O and SiF4 are products.)