SEBA Class 8 Science Important Chapter 3 Materials: Metals and Non-Metals

SEBA Class 8 Science Important Chapter 3 Materials: Metals and Non-Metals Solutions English Medium As Per SEBA New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters SEBA Class 8 General Science Additional Solutions and select need one. SCERT Important Solutions For Class 8 General Science Download PDF. Important Notes for Class 8 Science SCERT.

SEBA Class 8 Science Important Chapter 3 Materials: Metals and Non-Metals

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. Assam SEBA Board Class 8 Science Additional Question Answer are part of All Subject Solutions. Here we have given SCERT Class 8 General Science Important Notes for All Chapters, You can practice these here.

Materials: Metals and Non-Metals

Chapter: 3

PART – I

IMPORTANT QUESTION ANSWER

A. Short Answer Type Questions: 

1. What is the property of metals by which they can be beaten into thin sheets?

Ans: Malleability.

2. Which metal is stored in kerosene because it reacts vigorously with water?

Ans: Sodium.

3. What is the reaction of metals with acids?

Ans: Metals react with acids to produce metal salts and hydrogen gas.

4. What is the property of metals that allows them to be drawn into wires?

Ans: Ductility.

5. What is formed when metals react with oxygen?

Ans: Metallic oxides, which are generally basic in nature.

6. How do non-metals react with oxygen?

Ans: Non-metals react with oxygen to form non-metallic oxides, which are generally acidic in nature.

7. What happens when you burn magnesium ribbon in air?

Ans: Magnesium reacts with oxygen to form magnesium oxide, which is basic in nature.

8. What is the appearance of non-metals?

Ans: Non-metals are dull and lack lustre.

9. Which non-metal is used in the purple-colored solution for antiseptic purposes?

Ans: Potassium permanganate.

10. Why are copper and aluminum used in electrical wires?

Ans: Because they are good conductors of electricity.

B. Fill in the Blanks

1. Metals like iron and aluminum are __________ and __________.

Ans: Malleable, ductile.

2. The reaction of metals with oxygen forms __________, which are usually __________ in nature.

Ans: Oxides, basic.

3. Non-metals like sulfur and phosphorus form __________ oxides.

Ans: Acidic.

4. The ability of metals to be drawn into wires is called __________.

Ans: Ductility.

5. Sodium is highly __________ and must be stored in __________ to prevent reaction with air.

Ans: Reactive, kerosene.