SNC2D: Chemical versus Physical Change Lab (52 Marks Total)
Knowledge & Understanding	Application	Thinking & Inquiry	Communication	
/10	/14	/20	/8	

Using the chemical vs. physical change interactive lab, complete the following assignment and answer the analysis questions at the end. 

Below, list five clues that suggest a chemical change has occurred (2 Marks; K/U)
1.
2.
3.
4.
5.

Complete the following tables using your observations from the interactive lab.   

Table 1:  (4 marks; Knowledge & Understanding)
Reactants	Observations	Type of Change (Physical or Chemical)	Explanation for type of change	
Burning fire wood	
			
Heating copper carbonate				
Mixing sodium chloride solution and silver nitrate solution				
Alka-Seltzer tablets added to citric acid				
Frying an egg	

Table 2: (4 marks; Knowledge & Understanding)
Reactants	Observations	Type of Change (Physical or Chemical)	Explanation for type of change	
Melting of ice				
Boiling of water				
Dissolving powder or crystals in water				
Crushing a pop can				
Ripping a pair of jeans				

Table 3:  (20 Marks; Thinking & Inquiry)
Reactants	Observations	Type of Change	Explanation	
Magnesium in a Bunsen burner flame				
Sulphuric acid is added to sugar 				
Crushing up a sugar cube				
Shaking a salad dressing container				
Grass growing 				
Breaking a hockey stick				
A car rusting				
Baking a cake				
A snowman melting during a warm day				
Stretching a rubber band				
Analysis Questions 
1.	A candle burning can be considered to be both a physical and chemical change. Explain how this is possible.  (4 Marks total: 2 Communication, 2 Application,)

2.	Describe three more examples of chemical changes and 3 more examples of physical changes that occur in everyday life. Explain why each of these changes is either a chemical or physical change. (18 Marks Total: 6 Communication, 12 marks Application)