Download App

Metals and Non-Metals — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceMetals and Non-Metals2 Marks
Question
How is it that ionic compounds in the solid state do not conduct electricity but they do so when in molten state?
✓

Answer

Although solid ionic compounds are made up of ions but they do not conduct electricity in solid state. This is because in the solid ionic compound the ions are held together in fixed positions by strong electrostatic forces and cannot move freely. However, when we dissolve the ionic solid in water or melt it, the crystal structure is broken down and ions become free to move and conduct electricity.
Thus, an aqueous solution of an ionic compound conducts electricity because there are plenty of free ions in the solution which are able to conduct electric current.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the questions.[Che-2M]" from Metals and Non-Metals→Metals and Non-Metals — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

Non-metals react with oxygen to form acidic oxides or neutral oxides. Carbon burns in air to form carbon dioxide.

$\text{C(s)}+\text{O}_2\text{(g)}\rightarrow\text{CO}_2\text{(g)}$

The nature of the product formed is acidic. When carbon dioxide dissolves in water, it forms carbonic acid. It turns blue litmus to red which shows it is acidic in nature.

→
What is “baking powder”? How does it make the cake soft and spongy?
→
Write equations for the reactions of:
  1. Iron with steam.
  2. Calcium and potassium with water.
→
Which of the following are endothermic reactions and which are exothermic reactions?
  1. Burning of natural gas.
  2. Photosynthesis.
  3. Electrolysis of water.
  4. Respiration.
  5. Decomposition of calcium carbonate.
→
In the following set of element, one element does not belong to the set. Select this element and state why it does not belong:
Calcium, Magnesium, Sodium, Beryllium.
→
Explain why, iron sheets are coated with zinc.
→
What is a covalent bond? What type of bond exists in (i) CCl4, and (ii) CaCl2?
→
Fresh milk has a pH of 6. How do you think the pH will change as it turns into curd? Explain your answer.
→
What is a group in the periodic table? In which part of a group would you separately expect the elements to have.
  1. The greatest metallic character.
  2. The largest atomic size?
→
In which pH range our body works?
→