Understanding Matter: Pure Substances and Mixtures

What are the two main classifications of matter found on Earth?

• Atoms and Molecules

• Pure Substances and Mixtures

• Organic and Inorganic

• Solid and Liquid

Can elements on the periodic table be chemically separated?

• Yes, easily

• No

• Only with high heat

• Only in a vacuum

What is an example of a pure substance?

• Air

• Water

• Soil

• Fruit Salad

What makes a compound different from a mixture?

• Mixtures are pure substances

• Compounds are chemically bonded elements

• Mixtures require a chemical process to separate

• Compounds can be physically separated

Can mixtures be separated physically?

• No

• Only if they are liquids

• Yes

• Only with special equipment

What is a homogeneous mixture?

• A mixture with varying compositions

• A mixture that is uniform throughout

• A mixture of only solids

• A mixture that cannot be separated

What is the main characteristic of a homogeneous mixture?

• It consists of only one element

• It can only be separated chemically

• It is the same throughout

• It has visible boundaries between components

What is brass an example of?

• A compound

• An element

• A heterogeneous mixture

• A homogeneous mixture

Which of the following is a heterogeneous mixture?

• Vinegar

• Brass

• Fruit Salad

• Gatorade

What does the flow chart use to classify matter?

• Color and texture

• Physical and chemical separation methods

• State of matter

• Size and shape