Question
Classify the following as elements, compounds, or mixtures in the Table.
Carbon dioxide, sand, seawater, magnesium oxide, muddy water, aluminum, gold, oxygen, rust, iron sulfide, glucose, air, water, fruit juice, nitrogen, sodium chloride, sulfur, hydrogen, and baking soda.
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Identify pure substances amongst these and list them below.

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Answer

ElementsCompoundsMixtures
AluminiumCarbon Dioxide$\left( CO _2\right)$Sand
GoldMagnesium Oxide (MgO)Seawater
OxygenRust $\left( Fe _2 O _3\right)$Muddy Water
NitrogenIron Sulfide (FeS)Air
SulfurGlucose $\left( C _6 H _{12} O _6\right)$Fruit Juice
HydrogenWater$\left( H _2 O \right)$
Sodium Chloride (NaCl)
Baking Soda$\left( NaHCO _3\right)$
Pure Substances: Aluminium, gold, oxygen, nitrogen, sulfur, hydrogen, carbon dioxide, magnesium oxide, iron sulfide, glucose, water, sodium chloride, baking soda.

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