AP Chemistry - Unit 3 - Thou Shall Not Forget

What type of solid does not conduct electricity until it is melted or dissolved in water?

• Ionic Solid

• Metallic Solid

• Covalent Solid

• Molecular Solid

Tags

NGSS.HS-PS1-3

What is an interstitial alloy?

• An alloy where smaller atoms occupy the spaces between larger metal atoms.

• An alloy formed by melting two metals together.

• An alloy that contains only one type of metal.

• An alloy that is used exclusively in jewelry.

What is the role of temperature in the process of distillation?

• Temperature is controlled to selectively vaporize components based on their boiling points.

• Temperature has no effect on the distillation process.

• Higher temperatures are used to condense all components together.

• Temperature is only important for the final product quality.

Tags

NGSS.HS-PS1-5

What does a dashed line represent in molecular diagrams?

• A hydrogen bond.

• A covalent bond.

• An ionic bond.

• A van der Waals force.

What is the main characteristic of molecular solids?

• They are composed of molecules held together by intermolecular forces and do not conduct electricity.

• They are composed of atoms arranged in a lattice structure and conduct electricity.

• They are made of ions that are held together by ionic bonds and are typically hard and brittle.

• They are composed of a single type of atom and have high melting points.

What property does distillation separate mixtures based on?

• Boiling Point

• Melting Point

• Density

• Solubility

What does a dotted line represent in molecular diagrams?

• A hydrogen bond

• Not a hydrogen bond

• A covalent bond

• An ionic bond

Define distillation.

• A method of mixing liquids thoroughly.

• A separation process that relies on differences in boiling points of substances.

• A technique for cooling substances rapidly.

• A process of dissolving solids in liquids.

What type of alloy is formed when smaller atoms fit into the spaces between larger atoms?

• Interstitial alloy

• Covalent alloy

• Metallic alloy

• Sintered alloy

What is a hydrogen bond?

• A strong bond between two hydrogen atoms.

• A weak attraction between a hydrogen atom and an electronegative atom.

• A covalent bond between hydrogen and oxygen.

• A type of ionic bond involving hydrogen.