Chemistry Unit 1 Lesson1 Graded Classwork

Which of these is an intensive property of matter?

• mass

• volume

• density

• amount of energy

What is a compound?

• any substance, whether it is chemically bonded or not

• the smallest unit of matter that maintains its chemical identity

• a pure substance made of two or more elements that are chemically bonded

• a pure substance that cannot be broken down into simpler, stabler substances

Which process is a chemical change?

• boiling

• burning

• cutting

• grinding

What is a mixture?

• any substance with a uniform composition

• a combination of pure substances bonded chemically

• any group of elements that are chemically bonded to one another

• a blend of any two or more kinds of matter where each maintains its own unique properties

Which term describes a mixture that is not uniform throughout?

• solution

• homogeneous

• heterogeneous

• chemically bonded

A scientist is studying a homogeneous solid with a consistent and ordered arrangement in the lab. Which specialty is the scientist most likely working in?

• analytical chemistry

• crystallography

• geochemistry

• theoretical chemistry

Which change is a chemical change of matter?

• ice melting to produce water

• liquid silica solidifying to form glass

• water boiling to produce water vapor

• vinegar combining with baking soda to produce carbon dioxide

What does mass measure?

• how dense an object is

• the volume of an object

• the amount of matter in an object

• how much space an object occupies

Which statement describes why malleability is a physical property?

• It is a physical property because it changes the state of the substance.

• It is a physical property because it changes only the substance’s shape.

• It is a physical property because it alters only the flammability of the substance.

• It is a physical property because it rearranges the substance’s molecules into a new substance.

Which word describes a plan, pattern, representation, or description used to explain a phenomenon?

• conclusion

• hypothesis

• model

• theory