Matter Review

What do any two samples of the element mercury (Hg) have in common?

• the same mass

• the same volume

• the same type of atoms

• the same number of electrons

What change takes place in a substance as the molecular motion of that substance increases?

• the substance changes from a liquid to a gas

• the substance changes from a gas to a liquid

• the substance changes from a liquid to a solid

• the substance changes from a gas to a solid

Which of these changes can occur in a substance as energy of particles decreases?

• the substance melts

• the substance sublimes

• the substance condenses

• the substance evaporates

A group of students was asked to determine the extensive properties of an object. Which of these properties did they observe?

• mass

• conductivity

• reactivity with acid

• reactivity producing color

Alyssa investigates properties of matter. The answer to which question would BEST determine whether a substance is an element or a compound?

• What is the radius of each particle of the substance?

• Does the substance contain more than one type of atom?

• Was a chemical reaction necessary to create the substance?

• What is the electrical charge of the particles of the substance?

When water evaporates from Earth's surface into the atmosphere, its molecules enter the gas state. What subsequent change causes gas molecules to condense into the small water droplets that form clouds?

• mass is reduced

• volume is increased

• temperature is reduced

• pressure is increased

John fills a plastic bowl with water and puts it in the freezer. After an hour, he finds that a layer of ice has formed on the water. Which BEST explains why the ice formed?

• the mass of the water changed

• energy was released from the water

• a chemical reaction occurred at the surface of the water

• molecules were exchanged between the environment and the water

Which can be broken down chemically into simpler substances?

• isotopes

• atoms

• compounds

• elements

The boiling point of nitrogen is -196 degrees Celsius. What states of matter are involved when nitrogen boils?

• solid to gas

• liquid to gas

• liquid to solid

• gas to liquid

Which of the following is a chemical property of silver?

• malleable

• white metal

• conductor of heat

• reacts with nitric acid