Content block: Multiple choice question, hide and display content blocks

The content block with multi-selection questions can also be used in such a way that making a selection, for example, opens the following content block for the solver with the next task, which was previously hidden.
To do this, it is necessary to specify in the task evaluation matrix for each multiple-choice selection which content blocks it shows and which ones it hides from the solver.

 

The original task can also be hidden after making a selection, but for now, it has been left visible so that the solver can see how the task behaves with different choices.


Pick the correct equation for the reaction between hydrochloric acid and iron (III) oxide.

Choose the correct answer by clicking the correct button.

You picked a choice:
HCl + Fe2O3 → FeCl3 + H2O

 
The reactants and reaction products in this selection are correct, but the equation is unbalanced!

Balance the equation!
Click on the gap and write the correct answer. You can leave the gap empty if there is no need to write a number!
 
Fe2O3 + HCl → FeCl3 + H2O

You picked a choice:
6HCl + Fe2O3 → 2FeCl2 + 3H2O

 
If hydrochloric acid reacts with iron(III) oxide, the product is iron(III) chloride.

Fix the substance formula!
Click on the gap and write the correct answer. You can leave the gap empty if there is no need to write a number!

6HCl + Fe2O3 → 2FeCl + 3H2O

You picked a choice:
2HCl + FeO → FeCl2 + H2O

 
This is reaction between hydrochloric acid and iron (II) oxide not between hydrochloric acid and iron (III) oxide .

Add the correct indexes to the substance formula!
Click on the gap and write the correct answer. You can leave the gap empty if there is no need to write a number!

Iron (III) oxide formula is Fe O.

You picked a choice:
6HCl + Fe2O3 → 2FeCl3 + 3H2O

 
This is correct answer!
Click „Save and confirm“ button to get your points!