Compounds & Mixtures

What is air classified as: a compound or a mixture?

• element

• pure substance

• mixture

• solution

Is air a homogeneous or heterogeneous mixture?

• homogeneous

• liquid

• solid

• heterogeneous

What are the main components of air?

• Nitrogen, Oxygen, Argon, Carbon Dioxide

• Helium

• Hydrogen

• Neon

How is mineral water different from regular water?

• Mineral water is artificially flavored, while regular water is not.

• Mineral water is sourced from the ocean, while regular water is not.

• Mineral water is always carbonated, while regular water is not.

• Mineral water contains minerals, while regular water does not.

What makes mineral water a mixture?

• Mineral water is a mixture due to the presence of dissolved vitamins and proteins.

• Mineral water is a mixture due to the presence of dissolved salt and sand.

• Mineral water is a mixture due to the presence of dissolved minerals and gases.

• Mineral water is a mixture due to the presence of dissolved sugar and caffeine.

Can you name some minerals commonly found in mineral water?

• Iron

• Calcium, magnesium, potassium, sodium

• Zinc

• Copper

Why is air considered a mixture and not a compound?

• Air is a mixture because its components chemically combine to form a new substance.

• Air is a compound because it has a fixed composition.

• Air is a mixture because its components do not chemically combine to form a new substance.

• Air is a mixture because it has a specific chemical formula.

What is the difference between a compound and a mixture?

• Compounds are always homogeneous, while mixtures are always heterogeneous.

• In a compound, elements are chemically bonded, while in a mixture, substances are physically mixed.

• In a compound, elements are physically mixed, while in a mixture, substances are chemically bonded.

• Mixtures can only be solid, while compounds can exist in any state of matter.

How can you separate the components of a mixture?

• By asking politely

• By using techniques such as filtration, distillation, chromatography, evaporation, and magnetism.

• By using baking soda

• By singing to the mixture

Why is it important to understand the difference between compounds and mixtures?

• It is important to understand the difference between compounds and mixtures because compounds are chemically bonded substances with fixed compositions, while mixtures are physically combined substances with variable compositions.

• The difference between compounds and mixtures is purely theoretical.

• Understanding compounds and mixtures is irrelevant in chemistry.

• Compounds and mixtures have the same properties.