Chemical Properties of Acids and Bases
Chemical Properties of Acids and Bases: Overview
This topic covers concepts, such as Chemical Properties of Acids, Reactions of Acid with Metals, Reaction of Zinc with Sodium Hydroxide, Nature of Non-Metallic Oxide & Neutralisation Reactions etc.
Important Questions on Chemical Properties of Acids and Bases
A property which is not common for all the mineral acids (Hydrochloric acid, Nitric acid, and Sulphuric acid is)
Iman and Arianna were given four different powders. They had to design a way of finding out if the powders were metals, carbonates or neither.
Here is their plan:
A: Add one spatula of powder to a test tube.
B: Add of hydrochloric acid to the test tube.
C: Fit a bung loosely on top of the test tube.
D: If the powder bubbles, remove the bung and hold a lighted splint close to the top of the tube.
E: Repeat steps A and B. Fit a bung with a delivery tube into the test tube — put the other end of the delivery tube into a test tube of limewater.
Here are their results:
| Powder | Observations when the acid is added | Observations when a light splint was used | Observations when the gas was bubbled through limewater |
| 1 | Lots of bubbles produced quickly | Heard a pop noise | No change |
| 2 | No bubbles | No change | No change |
| 3 | A few bubbles produced slowly | Heard a pop noise | No change |
| 4 | Lots of bubbles produced quickly | Flame went out | Limewater went cloudy |
Which of the following are powders of metal?
Iman and Arianna were given four different powders. They had to design a way of finding out if the powders were metals, carbonates or neither.
Here is their plan:
A: Add one spatula of powder to a test tube.
B: Add of hydrochloric acid to the test tube.
C: Fit a bung loosely on top of the test tube.
D: If the powder bubbles, remove the bung and hold a lighted splint close to the top of the tube.
E: Repeat steps A and B. Fit a bung with a delivery tube into the test tube — put the other end of the delivery tube into a test tube of limewater.
Here are their results:
| Powder | Observations when the acid is added | Observations when a light splint was used | Observations when the gas was bubbled through limewater |
| 1 | Lots of bubbles produced quickly | Heard a pop noise | No change |
| 2 | No bubbles | No change | No change |
| 3 | A few bubbles produced slowly | Heard a pop noise | No change |
| 4 | Lots of bubbles produced quickly | Flame went out | Limewater went cloudy |
What can be said about powder 4?
Metallic oxides are ______ in nature, but non-metallic oxides are ______ in nature. The information in which alternative completes the given statement is:
Copper sulphate can be produced by reacting copper carbonate with sulphuric acid. Water and carbon dioxide are also produced. Which of these compounds is a salt?
Which of the following gas turns lime water milky?
