Understanding Mixtures

What is a mixture?

• A combination of substances that cannot be separated

• A combination of substances physically mixed in any ratio

• A combination of substances chemically bonded

• A single substance in its pure form

Which of the following is an example of a homogeneous mixture?

• Oil and water

• Salt dissolved in water

• Pebbles in water

• Pizza

What characteristic defines a homogeneous mixture?

• It has a non-uniform composition

• It has a uniform composition throughout

• It consists of only one substance

• It can be easily separated into its components

Which of the following is NOT a homogeneous mixture?

• Air

• Vinegar

• Oil and water

• Carbonated drinks

What is a key feature of a heterogeneous mixture?

• It has a non-uniform composition

• It consists of only one type of molecule

• It cannot be separated into its components

• It has a uniform composition throughout