2. Atoms & Elements

Which of the following elements is a nonmetal that is a homonuclear polyatomic solid?

Which of the following exists as a diatomic solid at room temperature?

A volatile liquid (one that easily evaporates) is put into a jar and the jar is then sealed. Does the mass of the sealed jar and its contents change upon the vaporization of the liquid?

Let a triangle represent atoms of element A and a circle represent atoms of element B. b. Draw an atomic view of the compound AB in a liquid state (molecules close together).

Judge the following statements as true or false. If you believe a statement to be false, provide a corrected version. (d) Elements can exist in any of the three states of matter.

Gold's natural state has a definite shape and a definite volume. What is gold's natural state(s)?

In a ________, substances have no definite volume and particles move very quickly.

In a ________, molecules are close together and vibrate but do not flow.

A substance that has a definite shape and a definite volume is a ________.

Which best describes why a liquid needs a container, while a solid does not?

During which changes of state do atoms that cannot move past one another become free to move?

Materials can be classified as solids liquids or gases based on whether their shapes and

In which phase(s) are the molecules held in a defined shape?

Which state of matter is characterized by having a definite shape and a definite volume?

Which substance most likely consists of atoms that are able to slide past one another?

What is the main difference between the gas water vapor and the liquid water?

How do liquid water, ice, and water vapor differ from each other?

Matter that has a definite volume but no definite shape is a ____.

At STP, which list of elements contains a solid, a liquid, and a gas?