Mixtures vs Pure Substances Quiz

Pure Substances

• Sodium (Na) is a pure substance classified as an element.
• Water is a pure substance, categorized as a compound formed by hydrogen and oxygen.
• Oxygen (O) is an elemental pure substance essential for respiration.
• Carbon dioxide (CO2) is a pure compound consisting of carbon and oxygen.
• Iron (Fe) is a pure elemental substance, commonly used in construction and manufacturing.
• Nitrogen (N) is a pure elemental gas, comprising about 78% of Earth's atmosphere.
• Table salt (NaCl) is an essential pure compound used for seasoning and preservation.

Mixtures

• Soil is a heterogeneous mixture, comprising various organic and inorganic particles.
• Coffee is a homogeneous mixture where components are evenly mixed, creating a uniform appearance.
• 70% isopropyl alcohol is a homogeneous mixture commonly used as a disinfectant.
• Salt water is a homogeneous mixture of salt dissolved in water, with consistent composition throughout.
• Chocolate chip ice cream is a heterogeneous mixture due to the presence of distinct chocolate chips within the ice cream base.
• Eggs are a heterogeneous mixture, containing multiple components visually distinguishable.
• Cake batter is a homogeneous mixture, resulting in a uniform blend of ingredients.
• Air is a homogeneous mixture of gases, primarily nitrogen and oxygen.
• Nail polish is a homogeneous mixture often used for decorative purposes on nails.
• Chicken noodle soup is a heterogeneous mixture, featuring distinct pieces of chicken, noodles, and vegetables.
• Milk is a homogeneous mixture of fats, proteins, and water, providing a consistent texture and taste.
• Soda is a heterogeneous mixture, with bubbles and flavors dispersed throughout the liquid.

Test your understanding of mixtures and pure substances with this quiz. Identify whether various examples are elements, compounds, or mixtures. Use this as a study tool for chemistry concepts related to matter classification.