Chemistry of Materials Review

What is a physical property of a material?

• Reactivity with oxygen

• Density

• Ability to rust

• Flammability

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Which of the following is a chemical property?

• Color

• Solubility

• Melting point

• Reaction with acid

How can the density of a substance be calculated?

• By dividing mass by volume

• By multiplying mass by volume

• By adding mass and volume

• By subtracting volume from mass

Why do materials have unique properties?

• Because they are made of different colors

• Because of the way elements bond together

• Because they are all made of the same elements

• Because they have the same density

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Which property would be most useful to identify a metal?

• Solubility in water

• Density

• Melting point

• Reaction with acid

A new material is discovered with a unique structure. How would scientists determine its potential uses?

• By guessing based on its color

• By analyzing its physical and chemical properties

• By comparing it to materials with similar names

• By observing its reaction to sound

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Match the following words to their definitions

• A substance that cannot be broken down into simpler substances

• Molecule

• A substance formed from two or more elements chemically bonded

• Atom

• The smallest unit of a chemical element

• Compound

• A group of atoms bonded together

• Polymer

• A large molecule composed of many repeated subunits

• Element

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What is an atom?

• An atom is the basic building block of matter

• An atom is a group of molecules bonded together

• An atom is a large particle made up of protons and neutrons only.
• An atom is a fundamental force that holds matter together.

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What is a chemical bond?

• A chemical bond is an electrical attraction between atoms.

• A chemical bond is an attraction that occurs only in gases.
• A chemical bond is a type of physical change in matter.
• A chemical bond is the process of breaking down molecules into atoms.

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What is a compound?

• A compound is a single element that cannot be broken down.
• A compound is a mixture of different substances that retain their individual properties.
• A compound is a type of chemical reaction that occurs between elements.
• A compound is a substance made up of two or more elements joined together by a chemical bond.

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