Elements and Compounds Guiding Questions

Task 1: Sense-Making Compounds:

Using your Periodic Table as a reference read, discuss, and record responses for the following questions:

 

  1. You will notice that compounds like H2O and CO2 are not on the Periodic Table. Why not?

Compounds like H2O and CO2 are not on the periodic table because …

  1. Why is there a “2” in H2O and CO2? What do you think this “2” means?

There is a “2” in H2O and CO2 because…

We think the “2” means …

 

  1. What is the difference between an element and a compound?

An element is ….; whereas, a compound is …

 

  1. What is the difference between the chemical symbols CO and Co?  

The difference between the chemical symbols CO and Co is…

 

  1. What is the difference between the chemical symbols CI and Cl2?

The difference between the chemical symbols Cl and CI2 is…

 

  1. What three things are important to remember when writing chemical symbols?
    1. When writing chemical symbols, it is important to remember……… because…