Exploring Mixtures: Homogeneous vs Heterogeneous

What is a mixture?

• A substance that cannot be separated

• A chemical reaction between two substances

• A combination of two or more substances retaining their individual properties

• A single pure substance

Which of the following is an example of a mixture?

• Diamond

• Pure water

• Gold

• Soft drink

How are mixtures classified?

• By their state of matter

• As either homogeneous or heterogeneous

• By their color

• By their taste

What is a characteristic of a heterogeneous mixture?

• Components remain distinct and visible

• Only one phase is seen

• Components are not recognizable

• Uniform composition throughout

Which of the following is a heterogeneous mixture?

• Fruit salad

• Air without clouds

• Vinegar

• Salt water

What is a characteristic of a homogeneous mixture?

• Components are visible

• Non-uniform composition

• Only one phase is seen

• Components remain distinct

Which of the following is a homogeneous mixture?

• Orange juice with pulp

• Air with no clouds

• Fruit salad

• Beach sand

What is an alloy?

• A type of liquid

• A type of gas

• A mixture of different melted metals

• A pure metal

Which of the following is NOT a homogeneous mixture?

• Air with no clouds

• Salt water

• Vinegar

• Oil and water

What is the composition of air in a homogeneous mixture?

• Oxygen, nitrogen, carbon dioxide, and other particles

• Oxygen and hydrogen

• Only nitrogen

• Only oxygen

Tags

NGSS.MS-PS1-1