Question

Which statement about substance classification is incorrect?

• A. Solutions as well as pure substance can be described as homogenous
• B. A cake mixes may look like a pure substance, but it is not because it contains different types of particles such as flour, sugar and baking soda
• C. Milk is a pure substance because it is a solution of different molecules
• D. Pizza is a mechanical mixture because you see its components with your naked eye

Answer 1

The correct option is C

Milk is a pure substance because it is a solution of different molecules

Milk is a colloid of liquid butter fat globules dispersed within a water- based solution. A colloid is a microscopically dispersed insoluble particles is suspended throughout another substance.