Reference no: EM131154076

I. Identification.

Choose the answer from the table given below that corresponds to each number. Write the whole answer.

1.) The energy due to the position of the object

2.) Opposite charges attract each other, and like charges repel each other

3.) Conforms to the container shape but fills the container only to the extent of the liquid's volume, and thus, does not form a surface

4.) The characteristics that give each substance its unique identity

5.) The amount of space for the sample it occupies

6.) A flexible process of creative thinking and testing aimed at objective, verifiable discoveries about how nature works.

7.) Refers to the quantity of matter it contains

8.) The digit that is recorded in a measurement, both the certain and uncertain ones

9.) The energy that flows between objects that are at different temperatures

10.) Occurs when a substance alters its chemical composition.

II. Enumeration.

1.) The occult study of nature practiced in the 1st century AD by Greeks living in northern Egypt later become known by the Arabic Name _______________.

2.) The theory that proposed that combustible materials contain varying amounts of an undetectable substance which is released when the material burns.

3.) A substance that cannot be separated by any means is a/an:

4.) It is devised in the 18th century by the Swedish astronomer, Anders Celsius.

5.) The Kelvin scale was devised by the English physicist ______________.

III. Answer as Directed. Supply the answer as instructed.

a.) How many significant figures are there in the digit?

1. 444041
2. 1.00001000
3. 1.249x10^-6
4. 0.0000000011101110
5. 1,000,0000,001

b.) Convert the following to scientific notation or standard number

1. 963,000
2. 1.2 x10⁵
3. 1000.369
4. 0.00000044570
5. 98.6x10^-9

IV. Problem Solving. Solve the following problem with correct units. Show your own solution. Box your final answer.

1.) What is the length in miles of a 1.3x10⁵ inches soccer field?( 1 inch = 2.54 cm ),  ( 100 cm = 1 m ), ( 1000 m = 1 km ), ( 1 mile = 1.609 km )

2.) What is the density (g/cm³) of a tonic barium which weighs 2.60x10⁴ mg? The rectangular small slab of barium hassides of 2.0x10^-3 m length, 6.3x10^-2 mwidth, and 3x10^-4m thickness.( 1 g = 1000 mg ), ( 1 m = 100 cm )

3.) How many decades are there in 7.53x10⁹ minutes?( 1 decade = 10 years )

4.) To wire a cathode ray spectrophotometer, you need 3.86x10⁴ cm of nanowire that sells for P10.00/ft. What is the price of the wire? ( 4points )(1 inch = 2.54 cm), (12 inch=1 ft)

5.) A small cube of aluminum measures 25000 mm³ on a side and weighs 3.2kg. What is the density of the aluminum in g/cm³?

( 1 m³ = 1.0x10⁹ mm³), ( 1 m³ = 1.0x106 cm³)

6.) How many dm³ are there in 36 fluid ounce?( 1 cm³=0.001 dm³ ), (1 fluid ounce=29.57 cm³)

7.) - 164 ºC ( the boiling point of methane, the main component of natural gas ) to K and ºF.

8.) A child has a body temperature of 336.15 K. If the normal body temperature is 37ºC, does the child have a fever?  What is the temperature in ºF?

9.) What is the density (g/cm³) of highly reactive lithium if it weighs 65 kg and soaked in 50 gallons of water?

( 1 gallon = 3.785 dm³), ( 1 cm³ = 0.001 dm³ )

V. Writing a scientific method.

1.) Situation: Katy, a student in St. Peter's College is always absent on her chemistry class. Jasmine, which is the concern best friend, tries to reach out on Katy's situation. Based on your learning in writing a step-wise scientific method, formulate a research regarding on the existing problem of Katy.

(a) What is the PROBLEM?
(b) How do you PLAN for the existing problem of Katy?
(c) Write a HYPOTHESIS.
(d) What EXPERIMENT can you do to test the hypothesis?
(e) If the proposed experiment is successful, what CONCLUSION can be evaluated regarding on Katy's problem?