CBSE Class 8 Science Materials Metals And Non Metals Assignment Set G

CBSE Class 8 Science - Metals & non metals. Students are advised to refer to the attached assignments and practice them regularly. This will help them to identify their weak areas and will help them to score better in examination. Parents should download and give the assignments to their children for practice.

WORK SHEET

FIRST TERM

SUBJECT- Science

(Topic-Metals & non metals)

CLASS- VIII

Q 1Fill in the blanks

1 .Except---------------nonmetals do not react with air at ordinary temperature.

2 .A more active nonmetal displace a less active nonmetals from its _________ in solution

3 .Plants use nitrogen to manufacture____________.

4 .liquid_____________ is used to burn rocket fuel.

5 ____________used in the manufacture of pesticides like Gammexane.

6 with acetylene oxygen is used in-_________torches to cut & weld metal

7 Alloys of silver & tin with mercury is known as____________.

Q2 complete the following equations.

1. C (red hot)+H₂O(steam)→____+_____

2. 2C+O₂ →(Ignition)→________

3. Cl₂+2 H₂O→(Sunlight)→________+_______

4. Mg(hot)+H₂O(steam) →________+______

5. Cl₂+NaI→_____+______

Q3 Define the following terms

1. Metallic clink

2. Malleable

3. Ductile

4. Activity series

5 Corrosion

6. Halogen family

7. Noble gases

Q 4 Give reasons for the following

1 Silver & gold are called noble metals.

2 To prevent rusting iron is often galvanized.

3 Nylon or jute ropes can’t be used as electrical transmission.

4. We can’t use utensils made of cardboard.

5. We can’t draw wires from coal or wood.

6. Why white phosphorus is stored under water.

7. Nitrogen is used for filling food packages.

Q 5 Answer the following in not more than 20 words.

1. Name any ten metals.

2. Name five non metals which are gaseous at ordinary temperatures.

3. Mention three uses of carbon.

4. Mention three uses of sulphur.

5. What is tincture of iodine?

Q.6. Answer the following in not more than 30 words.

1. Mention five physical characteristics of metals.

2. Mention five physical characteristics of nonmetals.

3. Mention three uses of metals giving reasons

4. Describe three uses of chlorine.

5. Define an alloy, explain with three examples.

Q.7. Answer the following in not more than 100 words.

1. How would you use the active series while studying the displacement of hydrogen from acid by metals?

2. Describe an activity to show that the ‘lead’ of a pencil conducts electricity but a piece of sulphur does not.

3. Write three chemical properties of metals with chemical equations.

Please click the link below to download CBSE Class 8 Science - Metals & non metals

Tags: 

 


Click to View or Download pdf file
Click for more Science Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

TERI Green Olympiad 2020

Green Olympiad is a value driven project conducted by TERI (The Energy and Resources Institute) for school students annually since 1999. This Olympiad assesses the environment quotient of students and also enhances their understanding on issues related to sustainable...

Online Teacher Training Course on Competency based Education in DIKSHA

Competency is a set of skills, abilities, knowledge that helps an individual perform a given task in real life. Every learning should go into the imbibing of these skills to lead a productive and joyful life. The NATIONAL EDUCATION POLICY-2020 calls for shift towards...

Training of CBSE School Teachers on Olabs

Training of CBSE School Teachers on Olabs in collaboration with C-DAC Mumbai: OLabs is a platform jointly developed by the Ministry of Electronics and Telecommunications, Government of India, CDAC, and Amrita University to facilitate a virtual experience of CBSE...

Gandhiji Quiz by CBSE

CBSE has launched a Quiz on Mahatma Gandhi. The quiz portal can be accessed on Discover Gandhi portal at: https://discovergandhi.in/ DIKSHA platform (https://diksha.gov.in) and the Discover Gandhi mobile App which can be easily downloaded from Google Play Store on...

NEP Transforming India Quiz

As a part of Shikshak Parv celebration, an online quiz competition on National Education Policy 2020 will be organized by the Ministry of Education, Govt. of India, from 5 th September to 25th September 2020 in order to create awareness about NEP among all stakeholders...

Revised SOP preventive measures followed while conducting examinations

Revised SOP on preventive measures to be followed while conducting examinations to contain spread of COVID-19 issued by Ministry of Health & Family Welfare Examination centres are frequented by large number of students (as well as their parents) and staff till the...

×
Studies Today