Sabado, Agosto 10, 2013

Weekly Test in Chemistry (July 26, 2013)

I.                    Completion. Draw inside the box the particles of the following phases. Fill in the blanks the properties of these phases in terms of their volume and shape.
Solids                         Liquids                             Gases





Volume            ____________            ____________                         ____________
Shape               ____________            ____________                         ____________

II.                  Identification.
1.       Physical change from one state of matter to another.
2.       A solid which the particles are arranged in manner without any pattern.
3.       A solid which the arrangement of the particles has pattern.
4.       A distinct property of liquids which gives them the resistance to flow.
5.       Chemical property of matter which is the ability to burn.
6.       Chemical property of matter which is the ability to combine chemically with other substance.
7.       The ability of matter to be drawn into sheets.
8.       The ability of matter to be drawn into wires.
9.       These are properties that depend on the amount of materials.
10.   These are properties that depend on the quality of material.
11.   Referred to as chemical reaction where in a new substance is formed.
12.   A change only in appearance but not in the composition.
13.   Defined as mass divided by volume.
14.   Phase change from solid to liquid.
15.   Phase change from liquid to gas without boiling.
16.   Phase change from solid to gas.
17.   Phase change from liquid to solid.
18.   Phase change from liquid to gas with boiling.
19.   Phase change from gas to solid.
20.   Phase change from gas to liquid.
III.                Classification.
A.      Tell whether the following is extensive or intensive.


1.       Boiling point
2.       Height
3.       Solubility
4.       Texture
5.       Taste
6.       Weight
7.       Electrical conductivity
8.       Hardness
9.       Volume
10.   Specific gravity


B.      Label the following as chemical change or physical change.


1.       Photosynthesis
2.       Slicing an apple
3.       Dissolving sugar in water
4.       Dynamite explosion
5.       Formation of rock
6.       Molding a clay
7.       Frying egg
8.       Grinding peanuts
9.       Melting candle wax

10.   Tarnishing silver necklace

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