Drawing Compounds

Lesson #9:
Drawing
Compounds

© IMPACT SCIENCE EDUCATION

2019

impactscience.co
RC, used with permission

ELEMENTS AND
COMPOUNDS

❖ What compound is burning when you light a

gas stove?

Opener - Write your answer in your notebook

CC0 Magnascan - Pixabay

• Oxygen

• Carbon dioxide

• Methane

• Carbon monoxide

Multiple Choice

What compound is burning when you light a gas stove?

• Oxygen

• Carbon dioxide

• Methane

• Carbon monoxide

➔ How many bonds do carbon and hydrogen need

to make a stable compound, and how do you know?

➔ How would you draw a dot model for H and for C?

Opener

Multiple Choice

Methane is made from Cabon and Hydrogen bonds.

How many bonds do carbon and hydrogen need to make methane?

• 2

• 4

• 5

• 1

➔ How many H would it take to make C stable?
➔ What would the formula be for that compound:

methane?

Opener

Multiple Choice

How many H would it take to make C stable?

• 5 Hydrogen

• 1 Hydrogen

• 3 Hydrogen

• 4 Hydrogen

Multiple Choice

What would the formula be for that compound: methane?

• CH₂

• CH

• CH₄

• CO

1. Use red to draw dot diagrams for the following

atoms, like the example:

1. What do the atoms in #1 have in common?

Explore - Go to your handout and complete each question.

Open Ended

What do the atoms in #1 have in common?

Use complete sentences.

3. Use blue to draw dot diagrams for the following

atoms:

4. What do the atoms in #3 all have in common?

Explore

Open Ended

What do the atoms in #3 have in common?

Use complete sentences.

5. These atoms can combine to make compounds. If

we draw their dot diagrams very close to one
another, we can see what
is happening when their
outer electron shells
interact. Here is an
example:

By giving its 1 outer electron to Cl, Na is revealing
the full shell underneath. Now both atoms have
the stable outer shell number of 8 electrons.

Explore

6. Using #5 as an example, choose three other

combinations of atoms from #1 & 3 to form
compounds. Draw dot diagrams of these three
compounds. Continue to use red and blue
colored pencils.

7. Sometimes a compound can include more than

two atoms. An example
is water, H2O. Here is
what the dot diagram
of that compound
would look like:

Explore

Explore

8. Using #7 as an example, see if you can

draw dot diagrams for the following
compounds:

a. MgCl2

b. K2S

​

Explore

c. NaOH

d. CH4

e. NH3

​

Explore - Complete in your notebook

9. Challenge: In the opener today, we

discussed some common
natural gases. You already
drew a dot model for methane,
CH4. Now see if you can figure
out how to draw a dot model for ethane,
C2H6.

Once completed see the teacher to get a stamp.