Question

Classify the following types of matter as either homogeneous or heterogeneous mixtures:

a) Homogeneous: Carbonated soft drink with bubbles
Heterogeneous: Chunky spaghetti sauce

b) Homogeneous: Chocolate chip ice cream, Italian salad dressing, Corn syrup, Black coffee, Sugar water, Pure air
Heterogeneous: Soil, Aluminum foil, Paint, Rubbing alcohol, Fruit-flavored milk, Beach sand

Answer 1

Matter is classified as elements, compounds, homogeneous mixtures, or heterogeneous mixtures based on composition and uniformity. Salt and pure water are compounds, soil and bronze are heterogeneous mixtures, while salt water and pure air are homogeneous mixtures; gold is an element.

Step-by-step explanation:

When classifying matter, it's important to determine whether a substance is an element, a compound, a homogeneous mixture (solution), or a heterogeneous mixture. An element consists of a single type of atom, a compound is made of two or more elements chemically combined, and mixtures are combinations of two or more substances that are not chemically bonded and can be separated by physical means.

To classify the substances given:

• Salt is a compound (sodium chloride, NaCl).
• Pure water is a compound (H2O).
• Soil is a heterogeneous mixture because its composition varies throughout.
• Salt water is a homogeneous mixture as the salt is evenly distributed in the water.
• Pure air is a homogeneous mixture of gases.
• Carbon dioxide (CO2) is a compound.
• Gold is an element (if it's pure gold).
• Bronze is a heterogeneous mixture because it is an alloy consisting of copper and other metals such as tin.