Exploring the New Class of Matter

What is the definition of classification?

• Classifying items based on their color

• Arranging items in alphabetical order

• Sorting and grouping items according to shared characteristics

• Grouping items based on their size

Which of the following is a characteristic of pure substances?

• They are always mixtures

• They have a fixed composition

• They can be separated by physical means

• They have varying ratios of atoms

What is an example of a pure substance?

• Salt water

• Salad

• Pure gold

• Air

Tags

NGSS.MS-PS1-4

Which of the following statements is true about elements?

• They are composed of only one kind of atom

• They are always found in compounds

• They can be separated by physical means

• They can be broken down into simpler substances by chemical means

What is a compound?

• A homogeneous mixture

• A single element

• A pure substance composed of two or more types of elements chemically combined

• A mixture of two or more substances

Tags

NGSS.MS-PS1-1

Which of the following is a characteristic of mixtures?

• They retain their individual properties

• They are chemically combined

• They have a fixed ratio of elements

• They cannot be separated by physical means

What is an example of a homogeneous mixture?

• Salt water

• Granite rock

• Salad

• Italian dressing

What is a heterogeneous mixture?

• A mixture where the composition is not uniform throughout

• A pure substance

• A compound

• A mixture that is uniform throughout

Which method is used to separate a mixture of liquids with different boiling points?

• Magnetism

• Distillation

• Chromatography

• Filtration

What is chromatography used for?

• Separating mixtures based on boiling points

• Separating mixtures based on particle size

• Separating magnetic materials from non-magnetic materials

• Separating mixtures by separating components between stationary and mobile phases