Week 8: Chemical Bonding and The Law

As we come to the end of our learning on the periodic table, we will now look at the relationship between the elements, chemical bonding, and the Law of Conservation of Matter. We spent the first two days of the previous week discussing the Law of Conservation of Matter, but this week we will get into more of the math behind it. Review these videos in preparation for class this week.


Here is the link for the Element Square project internet research as we reviewed in class:
Periodic Table Research Search Engine. Use this video to review the expectations for your Element Square research handout. 

1st Period - Periodic Table Basics Assignment (Advance)
2nd - 4th Periods - Periodic Table Basics Assignment (Regular) (ANSWER KEY)

Vocabulary of the Week (VOTW) - elements, reactivity, periodic table, conservation, bond, coefficient, subscript, energy level, valence electrons, reactants, products

The Periodic Table and Valence Electrons



Video Questions
How many elements can each energy level hold?
What is the name of the electron in the outermost energy level? [7:57]
What is the purpose of the electron dot diagram or the Lewis Diagram? [9:02]
How many valence electrons do the elements in Group 2 contain? [10:44]
Where do you place the valence electron dots for elements in Group 13? [12:15]
What is the unique nature of the valence electrons for elements in Group 18? [15:30]
What can be implied when observing an element with a full energy level? [15:59]

Chemical Bonds




Video Questions
What type of bond is sodium chloride (NaCl)?  
Why does sodium and chlorine join together? [2:53]
How many atoms does Na give to Cl? [3:40]
What do you call an atom that has a charge? [4:32]
How many steps take place in forming ionic bonds? [6:01]

Law of Conservation of Mass and Balancing Equations





Balancing Chemical Equations by Brightstorm (video with more practice problems)

Video Questions
What is the purpose of the coefficient?

Click to Run

Our Agenda this Week:

(The schedule changes to match the needs of my students.)

	MONDAY	TUESDAY	WEDNESDAY	THURSDAY	FRIDAY
GIFTED	Bonding Notes	Academy Lab; Element Project	Drawing Molecules; Periodic Table Basics Activity	Work on Element Project	Work on Element Project (Due today); Bonding
REGULAR	Finish PT Tables; Bonding Notes	Academy Lab; Element Project	Drawing Molecules; Periodic Table Basics Activity	Work on Element Project	Work on Element Project (Due today); Bonding
Next Week:  Video Projects Due (Gifted); Matter Part !! Test, Standards Project

Week 7: The Periodic Table

There is a new hit song on the radio waves now...well...maybe not on your local radio station, but definitely a cool song to listen to if I say so myself.

How cool was that?

So probably by now you have figured out that we are finally going to talk about that big poster on the classroom wall.  Well if that was your thought, you are most certainly correct. We already know the story of Dmitri Mendeleev and how the periodic table came about, but if you need a refresher click here. 

Before we get into the heart of the matter, we will start this week with three discovery learning stations. 

Learning Station 1: The Periodic Table
This learning station is all about figuring out how to organize the missing elements from the periodic table and then hypothesizing about five elements with regard to their chemical properties. Check out this video before class on Monday. 

Learning Station 2: Atomic Structure Models
This learning stations requires that you choose an atom and build it according to the information provided on the periodic table. You will be assigned one element to study at this station. You will want to review your notes on the structure of the atom to help you out on this activity. Please watch this video before class on Monday.

Learning Station 3: The Law of Conservation of Matter
The Law of Conservation of Matter states that in the formation of new substances matter can neither be created nor destroyed.  You will be busy providing evidence to support this law. Be careful though, things can get pretty messy if you don't follow the directions! Here's the last video you need to watch before Monday.

After we have completed the learning stations, we will share our findings as a class. Be prepared to discuss what you've learned, in addition to asking any questions that will help you clear up any areas of confusion. 

Our focus for the remainder of the week will be the periodic table. Are you ready?

Additional resources for this week include:
Hunting the Elements Periodic Table [PDF]
Periodic Table Games
Element Flash Cards
Periodic Table Name Game
Nova's Elemental Quiz
Periodic Table Quiz
Printable Periodic Table Test (Don't do 28-29 and 43-46; answer key available in classroom)

 

Week 6: Atoms and Molecules

I think the banana smell has left the room! Thank goodness because I don't think we could observe them one more week. Here is a video of what we did with this lab.

 
Now that we are done with describing matter, let's look at matter at a microscopic level. If I told you that matter was made of up billions of specks too small for the human eye to see, would you believe me? Of course you would! These really tiny particles are known as atoms.  So how small are they you ask? Well let's turn to this really awesome video on the atom!

Okay, so let's quickly review:

1. What is all matter composed of?
2. How small is an atom?
3. What does the atom contain?
4. Where does most of the atom's mass come from?
5. What is between the nucleus and the electrons?

How does an atom differ from a molecule? 

Atoms are the building blocks of all matter. This means that everything is composed of the atoms currently known to man. Unfortunately we can't just walk up to an atom and look at it because it is to small for the naked eye.  However, if we could get our hands on really fancy (and expensive) science equipment we could probably get to see what an atom looks like. Atoms are composed of two main areas: the electron cloud and nucleus. If we zoom even further into the two areas we would come across even smaller particles (subatomic) called protons, electrons, and neutrons. Protons and neutrons are found in the nucleus of the atom while the electrons are moving around the nucleus within the election cloud. 

If you recall from last week, elements are formed from the same type of atom.  In other words, the hydrogen element is composed of millions of hydrogen atoms. This is why it is a pure substance. (Oh look, another vocabulary word from last week!) When we take two or more elements (of the 118 to choose from) and bond (combine) them together we have molecules. Some molecules like to share electrons while others have more of a give-and-take partnership, but more on that later.  

In order to know how many elements are contained in a chemical bond we look to the chemical formula for the answer.  The chemical formula is composed of letters and numbers that indicate the ratio of elements within a bond.  Water or H2O means that there are two hydrogen (H) atoms to one oxygen (O) atom in every water molecule (see image below).

See this image in video by clicking here.

Later this week we are going to do something called Paper Blogging. This video is similar to what we are going to do.  

By the way, I came across this e-chapter and thought I would share it with you. It covers many of the topics we've been and will cover.

Other Helpful Resources for this week:
Subatomic Particles (Practice Quiz)
Atomic Structure (Practice Quiz)
The Atom Quiz 

Week 5: Hunting the Elements

Okay so far we have talked about ways in which to describe matter

• Physical properties
• Physical changes
• Chemical properties
• Chemical changes
• States of Matter (motion of particles)
• Changes of States
• Pure Substances (elements and compounds)
• Mixtures (homogeneous and heterogeneous)
• Atoms*
• Molecules*

*We will talk about these for another couple of weeks.

After a long weekend and a test (or video productions), it's time to go on a hunt of the elements. We have been talking about the elements for a few days and now it's time to see elements in action. Here is a snapshot of where we are headed this week! No 80s clothes or scratchy footage in this awesome video!




Good luck on Tuesday's test! See YOU in the classroom!
Matter Practice Test