Properties and Types of Solids

What is true about chemicals?

• They are always dangerous.

• They are only found in liquids and gases.

• Almost everything we interact with daily is made of chemicals.

• They are only man-made.

What are the two main types of solids?

• Hard and soft

• Moldable and non-moldable

• Crystalline and amorphous

• Liquid and gas

How do amorphous solids melt?

• They melt at an exact temperature, like ice.

• They melt gradually over a range of temperatures.

• They do not melt, they just break.

• They turn into gas directly.

How do amorphous solids usually break when force is applied?

• Along straight, smooth lines.

• In random, uneven shapes.

• They bend without breaking.

• They turn into a liquid.

What kind of forces hold together molecular solids like sugar and frozen carbon dioxide?

• Strong ionic bonds

• Weak Van der Waals forces

• Metallic bonds

• Covalent network bonds

Which of these is a property of ionic solids like table salt?

• They are usually soft and have low melting points.

• They are often soluble in water and have very high melting points.

• They are made of individual atoms that form a rigid structure.

• They are very rare and unstable.

What is a diamond an example of?

• A molecular solid

• An ionic solid

• A network atomic solid

• A noble gas solid

What makes metals able to be pounded flat or stretched into wires?

• Their atoms are very small.

• They have a "sea of electrons" that allows for flexible bonds.

• They are made of noble gases.

• They have weak Van der Waals forces.