Subject- Science ( Semi English)
Std-6th. J.V.Sonambe.
sub Teacher- Deepak Bhalerao,sir
SELF STUDY SERIES
विद्यार्थी मित्रांनो,
खाली दिलेला स्वाध्याय नीट वाचा व आपल्या पुस्तकात पाहून उत्तरे लिहा.कोणतेही गाईड व व्यवसाय पुस्तिकांचा आधार घेऊ नका.
1) Three states of substances
i).......
ii)......
iii)........
2) three states of water
i)....
ii).......
iii).......
3) when a substance changes from one state to another the process is called change of state of the........
4) name of the solid substances
i) camphor
ii) naphthalene balls
iii).....
5) substances freeze in winter i)......
ii)......
6) which liquid have you seen change into a vapour?
i).......ii).......
7) which solids directly change into the gaseous state?
i)......ii)......
8) the state of substance changes if it is heated or ....
9) liquids and .......substances do not have a shape of its own
10) ..... Have a shape of its own.
11) solids and liquids have a specific........
12) ...... Does not have a definite volume
13) change in the physical state of a substance is an effect of the amount of....... in it.
14) on gaining heat substance changes from solid to liquid and .......to gaseous.
15) when the substance cools or loses heat it changes from .......to liquid and liquid to solid.
16) A....... Is used to measure temperature.
17) degrees celsius (0C) is the unit of measuring.........
18) nowadays....... thermometers are frequently used.
19) boiling water temperature is......
20) freezing water temperature is.......
21) at sea level pure water boils at...... this is the boiling point of water
22) condensation of steam also takes place at.....
24) the boiling point and condensation point of........ are one and same
25) freezing point and melting point of water are .......and.......
26) ...... Is the freezing point of iron.
27) candles are made by melting......
28) ........ Is used to make ice cream.
29) sand is melted to make......
30) the change of a solid substance directly into a gas or vapour without first changing into a liquid is called......
31) properties of metals
i)malleability
ii)ductility
iii)thermal conductivity
iv)electrical conductivity
v)sonority
vi) luster
vii)........
32) name the brittle substances - chalk ,brick ,alum, glass,.........
33) cardboard ,wet mud, piece of wood- hardness
34) rubber band ,sponge -------
35) water, honey, gum .......
36) wooden block, iron block......
37) ........is soluble in water but not in kerosene
38) write soluble or insoluble from the following
i) sand......
ii) salt.....
iii) sugar......
39) glass ,some types of plastic, clean water and air are........ substances
40) substances like copper, platinum, gold, iron, silver ,aluminium are called......
41) ...... are found in the form of minerals deep inside the earth.
42) metals can be converted into seeds by hammering - malleability
43) metals can be stretched and drawn into wires........
44) electricity flows through metals all metals are conductors of....,...
45) electric boards fitted on the wall made of plastic or.......
46) metal allow hit to flow through them - thermal .........
47) metal have a typical sign or.....
48) name of the musical instruments - i)Veena
ii)......
48) examples of sonority of metals i) pluck a string of a musical instruments
ii) strike a wooden table with a wooden stick
48) metals produce a ringing sound this property is called.........
49) ...... Is the cause of change of state of substances.
50) all substances are made up of very small.....
51) objects are made up of.....
52) objects have a specific shape their parts have a specific arrangement by which we identify them
53) the substances in everyday use are of two main kinds i) natural ii)......
54) the substances available in nature are called....... substances
55) leather, jute, wool ,cotton, water, soil, metals are ......... substances
56) natural substances are of two kinds i)biotic ii)......
57) biotic substances are of two kinds i) animal origin
ii).......
58) substances obtained from living things are called ........ substances
59) substances that are not obtained from living things they are called the ......... substances.
60) new substances produced by processing naturally available substances are called ........substances
61) plastic, nylon, brass ,cement ,soap, window glass ,bricks, silk, sugar are the ....... substances
62) sand ,wool, bamboo, cotton, leafy vegetables, fruits, water are the ...... substances
63) waterproof, water resistance, lightweight ,easy to transport
64) glass can be made from sand and ........
65) while making man made substances the properties of the constituents undergo a change, this change occurs due to certain chemical reactions.These changes in the properties are permanent that is the original constituent substances cannot be obtained again from the new substances such changes are called ....... changes
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