Unit 1 Review: Matter

Which type of matter can not be broken down into simpler substances by a chemical change?

• an element

• a solution

• a mixture

• a compound

What is represented by the chemical formula

PbCl₂(s)?

• a pure substance

• a solution

• a homogeneous mixture

• a heterogeneous mixture

Two grams of potassium chloride are completely

dissolved in a sample of water in a beaker. This

solution is classified as

• an element

• a compound

• a homogeneous mixture

• a heterogeneous mixture

Which statement describes a chemical property of sodium?

• Sodium has a melting point of 371 K.

• Sodium has a molar mass of 23 grams.

• Sodium can conduct electricity in the liquid phase.

• Sodium can combine with chlorine to produce a salt.

Which sample of matter is a mixture?

• soil

• ammonia

• water

• calcium

Which of the following is considered to be a chemical property of matter

• viscosity

• reactivity

• texture

• density

An object is observed to have a silver color and a metallic appearance. The object is also found to have a mass of 11.34 grams and melts at 327.46°C.

Of the observed properties listed below, which is considered to be an extensive property?

• silver

• metallic

• mass

• melting point

What type of property is density

• chemical property

• intensive property

• extensive property

• dependent property

A lab technician is working on a sample of brass and testing its properties.

Which of the following properties of the brass is an extensive property?

• Melting Point: 920°C

• Melting Point: 920°C

• Mass: 62.9 g

• Reactivity: Dissolves in strong acid

Which state of matter has the greatest amount of kinetic energy?

• solid

• liquid

• gas

• varies according to the substance