Blog Archives - Mr. Powell Science

Modelling Continued and Review

1/31/2020

We have learned all the skills we need to be ready for our quiz on Tuesday. We will continue practicing and reviewing Monday then take our assessment the following day.

GOLD TAPE QUESTION: Gilbert N. Lewis is the scientist who developed the diagrams we still use today to draw molecules and their electrons. Lewis also developed what are now known as "Lewis Acids" and "Lewis Bases" Two pieces of gold tape is up for grabs this week! 1) What is a Lewis Acid? 2) What is a Lewis Base?

Molecular Bonding and Lewis Diagrams

1/30/2020

Yesterday we discussed the Octet rule and today we used the octet rule to create Lewis diagrams of both atoms and molecules. Use the videos below to review these concepts.

The Periodic Table of Elements continued.

1/28/2020

In class today students embarked on a periodic table scavenger hunt and then colored in their own periodic tables indicating which elements are are metals, metalloids, and non-metals. We also watched an episode of crash course chemistry about the history and significance of the Period Table. Tomorrow we will take a closer look at how atoms bond with each other.

The Periodic Table and the Bohr Model of the Atom

1/27/2020

Today we built periodic tables of the first 18 elements and learned about the Bohr model of the atom. Tomorrow we will learn about the Lewis Dot structure and continue practicing diagramming atoms. We will have our final chemistry assessment this Friday.

The Mystery of Matter

1/24/2020

Congratulations on completing your chemistry exam. On Monday we will begin the last part of our chemistry unit as we start to explore bonds.

GOLD TAPE QUESTION: In today's video we were introduced to an influential British chemist named Humphrey Davy. What four metals did Davy "discover" and first report in 1808?

Chemistry Exam Tomorrow

1/22/2020

On Thursday you will have an exam covering the Law of Conservation of Mass and balancing chemical equations. Use the videos below to help you study for your exam.

Balancing Equations Practice

1/21/2020

Watch the video below and practice balancing equations along with the video. You should pause and try to solve them yourself before watching the answer.

Forever Chemicals

1/17/2020

In class today we took a quiz on balancing chemical equations. Your GOLD TAPE QUESTION for this week is about a family of molecules we haven'y yet discussed in class. Click THIS LINK to learn about Forever Chemicals answer the following question: What are "Forever Chemicals" and what are scientists trying to do to them?

Balancing Equations

1/15/2020

After exploring the Law of Conservation of Mass in lab yesterday, now we need to learn to balance chemical equations. We will continue balancing chemical equations tomorrow using skittles as a model. If you aren't sure how to balance chemical equations, use the video to the right to relearn this important skill.

Molecules and Modelling

1/13/2020

Gold Tape Question: Methane has one carbon, ethane has two, propane has three and butane has four. What is the name of a hydrocarbon with TWELVE carbons?