Crystals & Polymers Review

Multiple Choice

The following is an example of

• Extended Structure

• Simple Compound

• Neither

Multiple Choice

Which of the following is NOT true about extended structures?

• They have a 3D repeating pattern

• They are a compound

• They have a crystalline structure

• They are always white or clear

Multiple Choice

Crystals are _____ structures that are formed with repeating patterns of atoms or molecules.

• repeated element

• repeated molecules

• solid

• chain

Multiple Choice

How many of each atom does a quartz structure have?

• 1 silicon atom to 2 oxygen atoms

• 200 silicon atoms to 3,000 oxygen atoms

• 10 silicon atoms to 50 oxygen atoms

• 350 silicon atoms to 350 oxygen atoms

Multiple Choice

3-dimensional, repeated patterns make up _____.

• Polymers

• Crystals

• Simple Molecule

• Extended Structure

Multiple Choice

 

If you were to look at grains of table salt (sodium chloride, NaCl) with a magnifying glass, you would see that each grain is a little cube. Why are salt grains cubical?

• All extended structure compounds form cubes.

• Sodium and chlorine atoms both have cubical shapes.

• In the extended structure of NaCl, atoms are arranged in a cubical pattern.

• A molecule of NaCl contains eight atoms, each at one of the corners of a cube.

Multiple Choice

How do molecules in a crystal arrange themselves?

• Crystals of molecules always form in a spherical shape.

• Crystals of molecules form in an irregular, diamond-like pattern.

• Crystals of molecules form in a regular, repeating pattern.

• Crystals of molecules always form in a shape similar to a snowflake

Multiple Choice

Which of these statements is NOT true of crystals?

• Crystals can be formed with a single element.

• Crystal structures can go on forever in all three dimensions.

• Their atoms are arranged in a repeating, three-dimensional subunits.

• A single molecule in their composition can go on forever in all three dimensions.

Multiple Choice

This is an example of a 

• Polymer

• Crystal

• Box

• Atom

Multiple Choice

Polymers are made of repeating molecules in a _____

• 3-dimensional shape

• chain formation

Multiple Choice

_______ form as a result of repeated patterns of atoms or molecules..

• Simple Molecule

• Polymer

• Crystal

• Extended Structure

Multiple Choice

A long chain of smaller, repeating molecules bonded together.

• Repeat unit

• Ion

• Polymer

• Monomer

Multiple Choice

Which of these statements is true of a polymer?

• The subunit is always an atom.

• The subunit is always a molecule.

• Polymers cannot extend forever.

• The subunit can be a molecule or an atom.

Multiple Choice

Which sentence describes this substance (a diamond)?

• An extended structure made of the same element.

• An extended structure made of molecules that are attracted to each other.

• A simple molecule made of different elements.

• An extended structure made of different elements.

Multiple Choice

Which of these statements is NOT true of an extended structure?

• Extended structures include crystals and polymers.

• Extended structures have subunits that occur in a constant ratio.

• Extended structures are a type of complex polymer.

• Extended structures have subunits that are arranged in repeating patterns.

Multiple Choice

One difference between a polymer and a crystal is that...

• A crystal is a two-dimensional structure

• A crystal is a three-dimensional structure

• A polymer is a three-dimensional structure

Match

Match the following

• Crystal

• Polymer

• Crystals AND Polymers

molecules appearing in any direction and forming geometric shapes

molecules forming long chains

molecules packed together in an orderly fashion

• molecules appearing in any direction and forming geometric shapes

• molecules forming long chains

• molecules packed together in an orderly fashion

Match

Match the following

• Made of repeated subunits of molecules

• Made of repeated atoms OR molecules

• Crystals

• Polymers

Polymer

Crystals

Geometric patterns

Chain pattern

• Polymer

• Crystals

• Geometric patterns

• Chain pattern

Multiple Choice

Which term describes the physical structure of all crystals?

• Geometric

• Liquid

• Random

• Carbon-based

Multiple Choice

Is the extended structure pictured a polymer or a crystal?

• crystal

• polymer

Multiple Choice

What is a polymer?

• a group of repeating atoms

• a long chain of repeating molecules

• a long chain molecule with identical group of atoms

• a long chain of different atoms

Multiple Choice

Is the extended structure pictured a polymer or a crystal?

• crystal

• polymer

Open Ended

Explain the differences between polymers and crystals.