Classify each of the following pure substances as an element or a compound: helium gas (He), mercury (Hg) in a thermometer, vinegar (C, H402), sulfur (S), lye (KOH).
Drag the appropriate items to their respective bins.
Element: helium gas (He), sulfur (S)
Compound: vinegar (C,H402), lye (KOH)
Unknown: mercury (Hg) in a thermometer
Element: helium gas (He), sulfur (S)
Compound: vinegar (C, H402), lye (KOH)
Not enough information: mercury (Hg) in a thermometer