Law of Conservation of Mass Quiz

What does the law of conservation of mass say about matter?

What does the 2 in this chemical equation tell me?

H2 + O --> H2O

 $C_2H_6\ +\ O_2\ \rightarrow\ 2CO_2\ +\ 3H_2O$  What are the product(s) in this reaction?

 $C_2H_6\ +\ O_{2\ }\ \rightarrow\ 2CO_2\ +\ 3H_2O$  

What are the reactant(s) in this reaction?

Describe what  " $\rightarrow$ "  tells me.

Which atom is bigger?

O or Fe

How do I determine an atoms size?

The first tab I click on when I get to Google Classroom is...

If I miss a day of Mr. Roberts' class or am quarantined, how do I know what to do while I'm gone?

If I earn a grade on an Extended Learning Activity that I am not happy with, when is the best time to come and retake the ELA? (Tell me 3 of the 4 options to get full credit.)