Chemical Properties of Metals

Q.

Write the chemical formulae of the following.

(a) Hydrogen sulphide

(b) Aluminium oxide

(c) Sodium nitrate

(d) Calcium hydroxide

Q.

The electrons in the outermost orbit of an atom are called bound electrons.

1. True
2. False

Q. Why does copper displace silver from sivler nitrate solution?

Q.

lt was Paheli’s birthday. Her grandmother gave her two gifts made of metals, one old dull silver spoon and a pair of lustrous gold earrings. She was surprised to see the difference in the appearance of the two metals. Can you explain the reason for this difference?

Q.

Write the chemical formula of the following compounds

(a) Calcium oxide (b) Calcium Hydroxide (c) Aluminium Sulphate

Q. Do zinc not react with water cold , hot or even steam ?
​​​​​​Please tell me or send me the reactivity series of metals with water.

Q. Question 4 (c)
Write the chemical formulae of the following:
(c) Copper nitrate

Q.

Write the chemical formula of the following compounds

(a) Calcium oxide (b) Calcium Hydroxide (c) Aluminium Sulphate

Q. The valency of oxygen is .

1. 1
2. 3
3. 2
4. 6

Q. what is isobar and isotherm?

Q.

Write the chemical formulae of the following:
(a) Magnesium chloride
(b) Calcium oxide
(c) Copper nitrate
(d) Aluminium chloride
(e) Calcium carbonate

Q. What do you understand by valency of an element? Is it possible to state the metallic and the non metallic character of an element from their valency?
Can an element show varaible valency. Explain why? [5 MARKS]

Q.

State two important uses of the following metal:

Silver

Q. Question 3(iii)
Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows:
$\begin{array}{ccccc}Metal& Iron\left(II\right)sulphate& Cooper\left(II\right)sulphate& Zincsulphate& Silvernitrate\\ A.& Noreaction& Displacement& & \\ B.& Displacement& & Noreaction& \\ C.& Noreaction& Noreaction& Noreaction& Displacement\\ D.& Noreaction& Noreaction& Noreaction& Noreaction\end{array}$
Use the Table above to answer the following questions about metals A, B, C and D.
(iii) Arrange the metals A, B, C and D in the decreasing order of reactivity.

Q.

Write the chemical formulae of the following.

(a) Hydrogen sulphide

(b) Aluminium oxide

(c) Sodium nitrate

(d) Calcium hydroxide

Q.

List the physical and chemical properties of oxygen.

Q. When an oxide of a non-metal reacts with water, which of the following is formed?

1. Acid
2. Base
3. Salt
4. None of these

Q.

Write the chemical formulae of the following:
(a) Magnesium chloride
(b) Calcium oxide
(c) Copper nitrate
(d) Aluminium chloride
(e) Calcium carbonate

Q.

Write the chemical formulae of the following:
(a) Magnesium chloride
(b) Calcium oxide
(c) Copper nitrate
(d) Aluminium chloride
(e) Calcium carbonate

Q. Identify the properties of the material which are utilised in the processes A and B.​

1. A: Malleability
   B: Ductility
2. A: Lustre
   B: Ductility
3. A: Ductility
   B: Malleability
4. A: Lustre
   B: Malleability

Q. Identify the compounds which on reacting with sulphuric acid produces a gas that turns limewater milky.

1. Copper carbonate
2. Potassium bicarbonate
3. Sodium hydrogen carbonate
4. Sodium hydroxide

Q. Identify the compounds which on reacting with sulphuric acid produces a gas that turns limewater milky.

1. Sodium hydrogen carbonate
2. Sodium hydroxide
3. Potassium bicarbonate
4. Copper carbonate

Q. The following substances contain _______.

Q.

Write the chemical formulae of the following.

(a) Hydrogen sulphide

(b) Aluminium oxide

(c) Sodium nitrate

(d) Calcium hydroxide

Q. The following substances contain _______.

1. 
2. 
3. 
4.