Modeling Matter Quiz

What is a property?

• A technique used to separate mixtures

• A type of substance

• A characteristic that helps identify or describe something

• A group of atoms joined together

What are molecules?

• Groups of atoms joined together

• The smallest pieces of matter

• Tiny nanoscale particles

• Substances made of only one kind of molecule

What is solubility?

• The process of separating mixtures

• The word used to describe whether substances are attracted to each other

• The ability of a substance to dissolve in water

• The level of attraction between molecules

What is an emulsifier?

• A group of atoms joined together

• A technique used to separate mixtures

• An ingredient that allows normally unmixable liquids to stay mixed

• A type of molecule

What do models help scientists do?

• Develop new products

• Understand things that cannot be directly observed

• Separate mixtures into component substances

• Create inferences about the world

What is chromatography used for?

• To evaluate scientific models

• To separate mixtures into their component substances

• To dissolve solids in liquids

• To hold together normally unmixable liquids

What happens when molecules of a solid are attracted to molecules of a liquid?

• They separate into layers over time

• They dissolve completely

• They stay clustered together as a solid

• They spread apart and mix together evenly

What is the purpose of an emulsifier like lecithin?

• To attract and hold together molecules of liquids that don’t normally mix

• To separate mixtures into their component substances

• To dissolve solids in liquids

• To evaluate scientific models

What determines the properties of a substance?

• The type of mixture it is in

• The level of attraction between molecules

• The size and weight of the substance

• The properties of its molecules

What is the process of dissolving at the nanoscale?

• Molecules of a solid are attracted to molecules of a liquid and spread apart evenly

• Molecules of a solid stay clustered together as a solid

• Molecules of a liquid separate into layers over time

• Molecules of a liquid hold together better