To determine whether the given substances are likely to be conductors or insulators, we can analyze their properties based on the nature of their bonds and the presence of free-moving charged particles:
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Dissolved oxygen gas (O2):
- Likely Insulator - Oxygen gas is a diatomic molecule and does not conduct electricity in its gaseous state.
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Solid calcium carbonate (CaCO3 - limestone):
- Likely Insulator - Calcium carbonate is an ionic compound, but in its solid state, it does not have free-moving ions to conduct electricity.
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Solid table salt (NaCl):
- Likely Insulator - Like calcium carbonate, solid table salt is an ionic compound, but in its solid form, the ions are fixed in a lattice structure, preventing conductivity.
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Dissolved table salt (Na+ + Cl−):
- Likely Conductor - When NaCl is dissolved in water, it dissociates into Na+ and Cl− ions, which can move freely and conduct electricity.
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Sugar (sports drinks such as Gatorade):
- Likely Insulator - Sugar molecules do not dissociate into ions in solution; therefore, they do not conduct electricity well.
In summary:
- Dissolved oxygen gas (O2): Insulator
- Solid calcium carbonate (CaCO3): Insulator
- Solid table salt (NaCl): Insulator
- Dissolved table salt (Na+ + Cl−): Conductor
- Sugar (Gatorade): Insulator