VII. QUESTIONS 1. What property is common among all the materials? 2. What property is the same for the three candles? For the three nails? 3. How would you classify the properties you have observed?
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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VI.
DATA AND RESULTS
Sample
Density ()
Length
Color
Hardness
Mass
Volume
(g)
(mL)
2 in.
candle
3 in.
4 in.
1 in
nail
2 in.
4 in.
VII.
QUESTIONS
1.
What property is common among all the materials?
What property is the same for the three candles? For the three nails?
3.
How would you classify the properties you have observed?
VIII.
CONCLUSIONS
O
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LABORATORY-ACTIVITY-4 - Saved
目
LABORATORY ACTIVITY 4
PHYSICAL PROPERTIES OF MATTER
I.
OVERVIEW
A physical property is a characteristic that can be observed and measured without changing
the identity and composition of the substance. Examples of physical properties are color,
melting point, and boiling point. Physical properties are very important because these help
chemists in identifying substances. For example, a clear, colorless liquid observed to boil at
100 and freeze at OE would definitely be water. Water undergoes physical change wherein
its physical appearance changes but its composition remains unchanged.
I.
ОВIЕСTIVES
1.
To be able to determine the physical properties of matter.
III.
MATERIALS
1 long liwanag candle (remove the tip and cut into 2-inch, 3-inch, and 4-inch long)
3 iron nails (1-inch, 2-inch, and 4-inch long)
Water
Clear straight glass (calibrate: 1mm = 1 mL)
Weighing scale
IV.
PROCEDURE
1.
Describe the hardness and color of the candle and iron nails.
Weigh each of the three candles. Record their masses.
Fill the glass with 200 ml of water. Get the volume of each candle by determining the
amount of water each piece displaces.
2.
3.
4.
Repeat steps 2 and 3 for three nails.
Solve for the density of each material.
5.
V.
COMPUTATIONS
VI.
DATA AND RESULTS
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