The Experiment |
A. | zinc + hydrochloric acid see results
Drop a small piece of zinc into a test tube containing 1-2 ml of 1.0 M hydrochloric acid solution. (products)
2. Classify the reaction. 3. What gas was formed? |
B. | iron + copper (II) sulfate see results
Drop a small piece of iron into a test tube containing 1-2 ml of 1.0 M copper (II) sulfate solution. (products)
2. Classify the reaction. 3. The blue color in the copper sulfate solution is due to the presence of what ion? 4. Predict the color of a copper nitrate solution. |
C. | ammonia gas + hydrogen chloride gas see results
Put 1-2 ml of concentrated ammonia solution into one test tube and 1-2 ml of concentrated hydrochloric acid solution into a second. Bring the mouths of the tubes near each other. (products)
2. Classify the reaction. 3. What is the difference between hydrochloric acid and hydrogen chloride? 4. The product of this reaction is a solid. Why does it look like smoke? |
D. | sodium carbonate + calcium chloride see results
Add 1-2 ml of a 0.1 M sodium carbonate solution to a test tube containing 1-2 ml of a 0.1 M calcium chloride solution. (products)
2. Classify the reaction. 3. The solid formed in this reaction is what compound? |
E. | copper + hydrochloric acid see results
Drop a small piece of copper into a test tube containing 1-2 ml of 1.0 M hydrochloric acid solution. (products)
2. Classify the reaction. |
F. | copper sulfate pentahydrate see results
Put a small amount of copper sulfate pentahydrate in a crucible and heat gently with a Bunsen burner. When the reaction is complete, allow the crucible to cool (products) and then add a drop of water to the product. (products)
2. Classify the reaction. 3. Write the equation for the reaction that occurs when a drop of water is added to products. |
G. | potassium chloride + sodium carbonate see results
Add 1-2 ml of a 0.1 M potassium chloride solution to a test tube containing 1-2 ml of a 0.1 M sodium carbonate solution. (products)
2. Classify the reaction. |
H. | lead (II) nitrate + potassium iodide see results
Add 1-2 ml of a 0.1 M lead (II) nitrate solution to a test tube containing 1-2 ml of a 0.1 M potassium iodide solution. (products)
2. Classify the reaction. 3. What is the identity of the solid formed in this reaction? |
I. | magnesium metal + oxygen see results
Put a small amount of magnesium metal in a crucible and heat gently with a Bunsen burner. Be careful when heating as burning magnesium produces a blinding light. If the magnesium ignites, the lid is quickly placed on the crucible to extinguish the flame. (products)
2. Classify the reaction. |
J. | potassium hydrogen carbonate + hydrochloric acid see results
Add 1-2 ml of a 0.1 M hydrochloric acid solution to a test tube containing a small amount of potassium hydrogen carbonate. (products)
2. Classify the reaction. 3. What gas is formed? |
K. | ammonium carbonate see results
Place a small amount of ammonium carbonate in a test tube. Attach a piece of rubber tubing to the test tube and gently heat the tube. Bubble the gases produced through a saturated calcium hydroxide solution and then through a phenolphthalein indicator solution. The solid formed when the products of the reaction are passed through the calcium hydroxide solution is calcium carbonate. Phenolphthalein is an acid-base indicator that is bright pink or purple in a basic solution.
2. Classify the reaction. |
introduction | chemical reactions | signs of reaction | experiment | additional practice |