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NAVYUG SCHOOL, PANDARA PARK
SUMMER HOLIDAYS HOME WORK
CLASS IX (2022 -23)
SCIENCE (CHEMISTRY
LEARNING OUTCOMES
The Holiday Home work aims to:
1. Achieve cognitive, affective and psychomotor excellence;
2. Enhance self-awareness and explore innate potential;
3. Imbibe 21st century learning, literacy and life skills;
4. Promote goal setting, critical thinking and lifelong learning;
5. Integrate art, science and technology
6. Utilize technology and information for the betterment of humankind;
7. Strengthen knowledge and attitude related to livelihood skills;
8. Develop the ability to appreciate art and show case talent;
9. Promote physical fitness, health and well-being.
10. Explore creativity in children.
11. Improving handwriting.
ASSESSMENT RUBRICS:
S. No.
Aspects
Marks
1.
Content and accuracy
2
2.
Neatness, Presentation and creativity
2
3.
Punctuality / Timely submission
1
UT 1 Syllabus Ch 1, 2 and 5 read chapters, Learn all the work done in notebook and also learn the assignments given below.
1. HOLIDAY HOME WORK –ASSIGNMENT – 1 (To be done in Chemistry Notebook) Q1 Which of the following is/are a matter: Apple, biscuit, coffee, toffee, soil, soyabean oil, cold drink, ice-cream, tooth paste, scent, dust, wind and shoe? Q2. Name a simplest form of matter. Q3. Name different states of water. Q4. What is the freezing point of water? Q5. What is the melting point of ice? Q6. The boiling point of alcohol is 78 °C. What is this temperature on Kelvin scale? Q7. Arrange the following substances in increasing order of force of attraction between the particles: (a) Milk (6) Salt and (c) Oxygen Q8. Name the phenomenon by which particles of two or more substances intermix on their own.
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Q9. Explain why solids have fixed shape but liquids and gases do not have fixed shape. Q10. Cotton in solid but it floats on water. Why? Q11. Name the three states of matter. Give one example of each. Q12. What are the two ways in which the physical state of matter can be changed? Q13. Explain how gases can be liquefied? Q14. What is sublimation? Give examples. Q15. Define latent heat of fusion. Q16. Define latent heat of vaporization. Q17. What produces more severe burns, boiling water or steam? Q18. How can the boiling point of a liquid be raised, without adding any impurity? Q19. A drop of Dettol got evenly distributed in water. How? Q20. Nitrogen boils at -196°C. What is this temperature on the Kelvin temperature scale?
ASSIGNMENT – 2 Q1. A hard substance produces a tinkling sound when beat. Is it metal or a non- metal? Q2. Is brass a mixture or a compound? Q3. What type of solution is an alloy? Liquid solution or solid solution Q4. Give one example of solid- liquid homogeneous mixture. Q5. Name two elements which are in liquid state at room temperature?
Q6. Lighting of a bulb in your room is a physical or chemical change? Q7. State the properties of a solution. Q8. State the properties of a suspension. Q9. State the properties of colloidal solution. Q10. If 20g of salt is present is 220 g of solution, calculate the concentration of solution:
SCIENCE (BIOLOGY) To be done in biology notebook.
Holiday Homework Assignment – 1
1. Name the fundamental unit of life.
2. A group of same kind of cells with a common origin and performing a set of functions is called as __________.
3. Brick: Building: ___________: Living organism
4. Define cell.
5. Who discovered cell and in which year?
6. Which material was used by Robert Hooke to study cells?
7. From where is cork obtained?
8. Name the instrument used to observe cells.
9. Give reason why the cells cannot be seen by naked eyes.
10. What was the shape of cork cells observed by Robert Hooke?
SCIENCE (BIOLOGY)
Holiday Homework Assignment – 2
1. Name a unicellular organism.
Ans. Amoeba
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2. Who discovered nucleus?
Ans. Robert Brown
3. On the basis of the number of cells, Select the odd one out in each –
a. Amoeba b. Fungi c. Paramecium d. Bacteria
4. On the basis of the number of cells, Select the odd one out –
a. Peepal tree b. Bread mould c. Amoeba d. Ant
5. The term Protoplasm was coined by –
a. Robert Brown b. Robert Hooke c. Purkinjee d. Schleiden
6. The single cell from which all organisms begin their life is:
a. Sperm b. Pollen c. Zygote d. Flower
7. Growth in organisms is the result of:
a. Increase in cell size
b. Increase in number of cells
c. Increase in mass of cells
d. Increase in protoplasm of cell
8. What is cell theory? Who proposed it?
9. Fill in the blanks in the following table –
S.No. Scientist Contribution Year 1. Robert Hooke ……………………………………………………………… 1665
2.
Leeuwenhoek
……………………………………………………………….
…………………… 3. ………………………… Discovered nucleus in the cell ………………………
4.
Coined the term ‘Protoplasm’ for the fluid substance in the cell
……………………… 5. Schleiden and Schwann ………………………………………………………………. ……………………….
6.
………………………………
All cells arise from pre-existing cells
…………………………
10. Differentiate between Unicellular and Multicellular Organisms –
Feature Unicellular organism Multicellular organism Definition
Examples
2.MULTIPLE ASSESSMENT ACTIVITY
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3D Working Model-
Using locally available material prepare 3 – D working science model . Please note that Thermocol is banned and its use is not allowed.
3.PORTFOLIO
Make two colourful, neat and attractive charts showing diagram of biology chapter 5 and 6 on A3 size sheet.
4.SUBJECT ENRICHMENT ACTIVITY –
A. PRACTICAL ACTIVITY -
Prepare a Practical Record File (One side white and one side ruled sheet) and record the following experiment neatly with the help of a blue Gel Pen. Labelled diagram is to be drawn with the help of fine black pencil on white side of the file.
1. Preparation of:
(a) A true solution of common salt, sugar and alum.
(b) A suspension of soil, chalk powder and fine sand in water
(c) A colloidal solution of stretch in water and egg albumin/milk in water and distinguish between these on the basis of
(i) Transparency
(ii) Filtration criterion
(iii) Stability
2. Preparation of
(a) A mixture
(b) A compound
Using iron filings and sulphur powder and distinction between these on the basis of:
(i) Appearance, i.e., homogeneity and heterogeneity
(ii) Behaviour towards a magnet
(iii) Behaviour towards carbon disulphide as a solvent
(iv) Effect of heat
(Take help of Science Lab Manual Class IX)
Make necessary entry in the Index also.
STAY HOME STAY SAFE.
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