Explain the following in NB1 .
Q1. Why are acids named so? Give few examples of acidic substances.
Q2. How does baking soda taste and feel when rubbed? Why?
Q3. If we cannot taste every substance, how dow e find its nature, i.e. acidic or basic?
Q4. What are indicators? List some naturally occurring indicators.
Submit Science NB2 tomorrow without fail.
Do in WB:
P-60 Q 10, 11, 13 and 16
Do in NB2:
P-62, 63 Q 11, 13 and 18.
Bring WB on Monday without fail.
Do in WB.
Complete (P-52 and 53 ) Laboratory Thermometer, Transfer of heat.
P-59 Q 5 and 6.
P-61 Q3 and 4.
Do in NB2.
Very Short Answer Questions:
- What is the scale of Celcius scale and Fahrenheit scale on a clinical thermometer? Which scale do we use?
- Mercury is toxic substance used in clinical thermometers. How has it been replaced?
Short Answer Questions:
- State the range of laboratory thermometer. Two laboratory thermometers are held above and on the side of candle flame at equal distance from it. Which one will show greater rise in temperatures? Why? (Hint: check one small division of each thermometer .
- Can you use a laboratory thermometer to measure your body temperature? Explain.
- State similarities and differences between the laboratory thermometer and clinical thermometer.
Prepare for Test on Tuesday of Ch1.
Do the following questions in WB:
(i) Hot and Cold(P-51)
(ii) Measuring Temperature(P-52)
(ii) Very Short Answer Questions (P-59): Q 1, 3, 4,5 and 6
(iv) Short Answer Questions(P- 56): Q2, 3 and 4.
Do in NB2:
(i) Vocabulary Task: Write the given key words 3 times in Notebook 2 using the rule: Look-Cover-Say-Check- Write.
Celcius Scale, Conduction, Conductor, Convection, Insulator, Land breeze, Radiation, Sea breeze, Temperature, Thermometer, Radiation