II. Answer the following questions in one or two sentences
1. What is conduction?
5 X 2 = 10
2. What are indicators?
3. How would you show that setting of curd is a chemical change?
4. Draw a simple circuit diagram and mark the essential components.
5. The distance between two stations is 240 km. A train takes 4 hours to cover this distance.
Calculate the speed of the train
Answers
Answer:
1. The process of heat transfer in solid is known as conduction.
2. Indicator are those substance from which heat is transferred easily ..
3. because the new substance are formed.as = change of taste, new substance curd is formed from milk.
4. I send you a pic Look at it by touching
5. speed=distance/time
thus, 240/4
=60 km/hr
Explanation:
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Answer:
1. The process by which heat or electricity passes through a material.
2. A pH indicator is a halochromic chemical compound added in small amounts to a solution. (So the pH of the solution can be determined visually. Hence, a pH indicator is a chemical detector for hydronium ions or hydrogen ions in the Arrhenius mod)
3. Setting of curd is a chemical change because a new substance(lactic acid) is formed. The curd formed has a different taste than the original substance. Also, once the curd is formed, milk cannot be re-obtained from it. It is an irreversible change.
5. Distance- 240 km
Time- 4 hrs
Therefore Speed = Distance÷Time
= 240÷4
= 40km/hr
Explanation:
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