+
ward
'
s
science
Page 3
These questions and answers are provided as sample, please customize to your activity.
1. Balance and classify the equation for Mg + O2 —> magnesium oxide.
2Mg + O2 —> 2 MgO; Synthesis
2. Critical Thinking: Based on your equation, would the product weigh more or less than the magnesium
you started with (think about the law of conservation of mass)?
__________________________ more
3. What evidence was there that a chemical reaction took place?
Light
4. Balance and classify the following Lead (II) nitrate reacts with potassium iodide to produce lead (II) iodide
and potassium nitrate.
Pb(NO3)2 + 2 KI —> PbI2 + 2 KNO3; Double replacement
5. What evidence was there that a chemical reaction took place?
Formation of a solid
6. Balance and classify H2O2 decomposes to form water plus O2.
2H2O2 —> 2H2O + O2; Decomposition
7. What evidence was there that a chemical reaction took place?
Temperature change
8. Balance and classify Magnesium reacts with hydrochloric acid to produce magnesium chloride
and hydrogen gas.
Mg + 2 HCl —> MgCl2 + H2; Single replacement
9. What evidence was there that a chemical reaction took place?
Temperature change or bubbles
Types of Reactions Lab:
Test Your Understanding Student Worksheet
Name: Class: Date:
