C. Give two examples for each of the following : 1. Opaque materials 2. Non-lustrous materials. 3. Translucent materials 4. Miscible liquids 5. Hard materials 6. Gases soluble in water 7. Materials that are denser than water
C. Give two examples for each of the following : 1. Opaque materials 2. Non-lustrous materials. 3. Translucent materials 4. Miscible liquids 5. Hard materials 6. Gases soluble in water 7. Materials that are denser than water
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:7.
Silver loses its lus
and moisture.
C. Give two examples for each of the following :
Opaque materials
Non-lustrous materials.
1.
2.
3.
Translucent materials
4. Miscible liquids
Hard materials
5.
6.
Gases soluble in water
7. Materials that are denser than water
D. Short answer questions :
1. Why do silver bangles lose their shine after a white?
2.
What are lustrous materials?
3. Why are cooking utensils not made of wood or plastic?
State two important properties of metals which are used to make jewellery
List any three properties of metals.
4.
5.
E. Long answer questions :
1.
What do you mean by classification? Why is it important?
2. Define material. Why do materials float or sink in water?
Describe any
3.
five physical properties of materials.
4. Distinguish between opaque and transparent materials.
5. Distinguish between miscible and immiscible liquids.
6. Explain with two examples, how gases that dissolves in water are useful to
7. What do you understand by hard and soft materials?
8. Explain why a coin sinks in water but a leaf floats on water.
НOTS
jat puts a solid object in a bucket of water. He observed that it floats jus
Explain why it did not sink.
What is the hardest material in our body?
58
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