Simple and Extended Structures

Structures of Matter
Properties of Matter

Multiple Choice

Which substance is not an element?

• Neon (Ne)

• Oxygen (O₂)

• Carbon dioxide (CO₂)

• Iron (Fe)

Multiple Choice

Which substance is a compound?

• Neon (Ne)

• Oxygen (O₂)

• Carbon Dioxide (CO₂)

• Nitrogen (N₂)

Multiple Choice

Which substance is not a molecule?

• Neon (Ne)

• Oxygen (O₂)

• Carbon Dioxide (CO₂)

• Nitrogen (N₂)

Multiple Select

Choose all the images that represent compounds.

Multiple Select

Choose all the images that represent molecules.

Multiple Choice

Select the chemical formula for this molecule.

Multiple Choice

The red numbers in the image below represent _______

• Hydrogen atoms

• Coefficients

• Subscripts

• Element Symbols

Multiple Choice

The blue numbers in the image below represent _______

• Hydrogen atoms

• Coefficients

• Subscripts

• Element Symbols

Multiple Choice

Which is the correct formula for:

3 Hydrogen (H)

1 Sulfur (S)

4 Oxygen (O)

• H₃SO₄

• HSO₄

• H₄S₃O

• H₂O

Multiple Choice

The ________________ which is a number that is found on the LEFT-hand side of the WHOLE chemical formula or compound . You have to ___________ this number to the rest of the element subscripts to get the accurate number of atoms in a given compound.

• Subscript, multiply

• Subscript, divide

• Coefficient, divide

• Coefficient, multiply

Multiple Choice

If an element symbol has no subscript next to it, then this indicates that there is only ________________ atom of this element in the molecule.

• Zero

• Two

• One

• Three

Multiple Choice

The ________________ which are numbers that are found on the lower RIGHT hand side of each element symbol. This tells you the number of ________________ of this element in the molecule.

• Atomic number, electrons

• Subscript, atoms

• Coefficient, atoms

• Atomic number, protons

Multiple Select

Which of the following are considered to be "Compounds"?

• CH₄

• Pb

• ZnO

• Zn₄

• C₆H₁₂O₆

Multiple Select

Which of the following are considered to be "Elements"?

• H

• NaCl

• O₂

• Zn

• CH₄

Multiple Choice

A subscript is the little number to the right of an element symbol that tells you how many molecules there are of that compound.

• True

• False

Multiple Choice

Molecules are when 2 or more elements are chemically bonded together. Ex. N₂, NaCl, P₄

• True

• False

​This means that Compounds and Elements are Pure substances, but Mixtures are not.

Repeating Subunits:
Carbon

Carbon is the basis of
all life on earth. Every
living thing is composed
of carbon.

Carbon can take many
different forms
depending on how the
atoms are arranged.

Graphene

Coal

Diamond

Atoms: Repeating
subunits - Carbon

Diamonds are the
hardest naturally
occurring substance on
earth.

In a diamond the carbon
atoms are arranged like
a pyramid. In science we
call this a tetrahedral
shaped molecule.

How can the same atom that makes up us and coal
make something so hard?

How can the properties be so different?

Multiple Choice

What is the basis of all life on Earth?

• Carbon

• Money

• Nitrogen

• The Sun

Multiple Choice

The form that matter takes is dependant on how the atoms are arranged.

• True

• False

Multiple Choice

What is the hardest naturally occurring substance on Earth

• Diamonds

• Granite

• The Rock

• Igneous Rock

Simple Structures

Extended Structures

● Weak structures
● Lower melting points
● Solids, liquids, and

gases

● Lower boiling points
● Water

● Strong structures
● Higher melting

points

● Keeps form (Solids)
● Higher boiling

points

● Diamonds
● Graphite
● Crystals
● Repeating Units
● Salt

11

●

All substances are made from about 100 different types of atoms that combine
in various ways

●

Combinations consist of between two - thousands of atoms

These simple molecules and extended structures can be observed by using
models to predict and/or describe phenomena because they are too small to
see

Atomic Composition

Simple Molecules&Extended Structures

Multiple Choice

Why are the water molecules in a cup able to flow freely?

• They are not bonded to each other.

• They are constantly repelling each other.

• They have a positive charge.

• They are very large and heavy.

Multiple Choice

According to the passage, what is the structure of a molecule like water described as?

• Simple molecular structure

• Complex molecular structure

• Crystalline structure

• Amorphous structure

4

5

Multiple Select

Which of the following are characteristics of a simple molecule.

• Few non-metallic atoms

• High melting point

• low boiling point

• gases or liquids

• Many atoms

Multiple Select

Identify the characteristics of extended structures

• Usually in a solid state

• High melting and boiling point

• Many bonds connecting the atoms

• often in a liquid state

• only a few bonds connecting the atoms

Multiple Select

What are examples of an extended structure

• Diamond

• Graphite

• Salt

• Water

• Chlorine gas

Atoms, Elements, Molecules, Compounds

What is a molecule?

​Molecule - a group of atoms held together by covalent bonds​

​

​

​

​Compounds ARE molecules. The difference is that a compound is just a specific type of molecule, one that consists of MORE THAN ONE TYPE OF ELEMENT.

​

What is a compound?

​Compound - a substance whose smallest particle includes more than one element chemically bonded together.

For example, water (H₂O) is a compound of hydrogen and oxygen atoms bonded together.

​

​

​

All compounds are molecules, but not all molecules are compounds.

​

Elements can be molecules too, but they are made up of more than one of the SAME ATOM.

​PUT THIS DIAGRAM IN YOUR NOTES!!! USE COLORED PENCILS!

​Even though compounds are made up of more than 1 type of atom, they are pure substances because the atoms are bonded together.

Multiple Choice

What is the scientific term for the sharing of electrons between atoms?

• Ionic bond

• Covalent bond

• Metallic bond

• Polar bond

Multiple Choice

How many elements are in C₆H₁₂O_6?

• 1

• 2

• 3

• 4

Multiple Choice

Select the chemical formula for this molecule.

Multiple Select

Choose all the images that represent molecular elements (diatomic elements).