Chemical Formulas: TEKS 8.5D

To the teacher:• This CPO Science PowerPoint presentation is designed to guide you through

the process of presenting the lesson to your students. The presentation uses a 5-E teaching model: Engage, Explore, Explain, Elaborate, and Evaluate.

• The PowerPoint Slide notes indicate where you may want to bring in various lesson elements such as quizzes, readings, investigations, animations, and practice materials. Additional science background information is provided in the slide notes where appropriate. You can view these notes by selecting “View,” then “Normal.” You will see the notes pane at the bottom of the PowerPoint workspace. Additionally, the slide notes are available as a separate document, accessible from the lesson home page.

• The slides that follow are intended for classroom use.

Chemical Formulas: TEKS 8.5D

Why is the Statue of Liberty green?

• You probably already know that the Statue of Liberty is made of copper. Why isn’t it the same color as a penny?

• How has this lock changed over time?

• How are these two processesalike?

Chemical Formulas: TEKS 8.5D

The periodic table

Chemical Formulas: TEKS 8.5D

Time to investigate!

Molecules and compounds

Chemical Formulas: TEKS 8.5D

What is the chemical formula?

• Determine the chemical formula for each molecule.

Chemical Formulas: TEKS 8.5D

Shape matters, too!• Glucose and fructose have

the same chemical formula, but the atoms are arranged differently. Which molecule has more atoms forming its ring?

• While both molecules are simple sugars, your body requires insulin to digest glucose, but not fructose.

Chemical Formulas: TEKS 8.5D

Time for Practice!

• Complete the lesson practice worksheet:- Chemical formulas

Chemical Formulas: TEKS 8.5D

Show what you know!

• Try the lesson’s interactive quiz, or complete a quiz that your teacher can print out for you.

• Hint: – You might want to review your lesson reading piece one

more time before trying the quiz.