ULOB Chem205l MARK LLOYD TRONDILLO

MARK LLOYD A.
TRONDILLO
BS CRIMINOLOGY 2ND YEAR.
LET’S CHECK Activity #6. Based on your understanding on the lesson about
measurements, answer the following:
A. Round off 24,581,650 to the indicated number of significant figures
a. 6 significant figures 24,581,700
b. 5 significant figures 24,582,000
c. 4 significant figures 24,580,000
d. 3 significant figures 24,600,000
e. 2 significant figures 25,000,000
B. Write the following numbers in scientific notation.

f. 52,400 5.24×10⁴
g. 1,005,000 1.005×10⁶
h. 0.000,543 5.43×10^-4
i. 0.000,000,870 8.70×10-7
j. 3.5 3.5×10⁰
C. Mark has a high fever with a body temperature of 1040F. What is his
Temperature in;
k. Celsius scale 40 °C
l. Kelvin scale 313 K
Activity #7. Based on your understanding on the lesson about measurements,

Answer the following:
A. Express the following in scientific notation.
a. 890,000 8.90 × 10⁵
b. 0.000,000,031 3.1 × 10-8
c. 0.001, 456 1.456 × 10-3
d. 677 6.77 × 10²
e. 1.23 1.23×10⁰
B. Express the following in standard notation.

a. 2.34 x 10-4 0.000,234
b. 4.56 x 103 4560
c. 7.60 x 10-6 0.000,007,600
d. 3.44 x 105 344,000
e. 9.8 x 10-2 0.098
C. Determine if each of the following is an exact or measured quantity having

uncertainties.
a. The mass of a rock sample collected from Mars. Exact Quantity
b. The number of students in a class. Measured Quantity
b. The number of students in a class. Measured Quantity
d. A dozen of eggs on the table. Exact Quantity
e. Annual meeting of the company. Measured Quantity
D. Explain why 0.002,304,0 grams is a measurement having 5 significant.

Digits.
The first three zeros is not considered as significant because it is in the rules on
how determine number of significant. That’s why there only 5 significant digits,
the 23040.
LET’S ANALYZE.
Activity #8. Many time when a series of contractors are working on plans, the.
units of measurement are sometimes lost and they need to decipher the
pattern
that the other builders used.
Place the appropriate measurements in each row to complete the
measurement
Pattern.
1 3 3 3 3 4 4 4 4
¼ ½ ¼ ½ ½ ¾
2 1¼ 1 2 2 2 2 3
1 ¾ ¼ ½ ¾
½
3 4 4 4 5 5 5 5 6
¼ ½ ¾ ¼ ¾ ¾
4 12 13 13 13 14 14 14 14
¾ ¼ ½ ½ ¼ ½
5 9 10 10 10 11 11 11 11
¾ ¼ ½ ¼ ¼ ½
6 4 4 4 4 4 5 5 5
¼ ½ ¾ ½ ¼ ½ ¼
7 1 1 1 1 1 1 2 2
¼ ½ ¼ ½ ¾ ¼
8 14 15 15 15 15 16 16 16
¾ ¼ ½ ¼ ¼ ½
9 8 8 8 9 9 9 9
¼ ½ ¾ ½ ½
10 18 18 18 18 18 19 19 19
¼ ½ ¼ ¼ ¼ ¾
Activity 9. Look around your house at all of the items with listed measurements on
packages.
Notice that most usually have both the English measurements and the metric
measurements. For
This activity you will practice recording and playing attention to the metric
measurements of
Common household items.
Make a list of 10 items in your house that have metric measurements.

Record whether they are in mL, grams, 0Celcius, kilograms, km/h and
more. Also include what type of measurement it is such as for volume,
mass or temperature. Try to find different types of measurements within
your group of at least 30 items.
ITEM METRIC UNIT TYPE OF

MESUREMWN MESUREMENT
T
Coke 100ml LITER Volume
Bottle
White grams
Glue 100gms Weight of mass
Perfume MILLITER Volume

60mL
Air 250mL MILLITER Volume

Freshener
Target MILLITER Volume
Multi- 600ML
Insect
Killer
Ethyl 500ML MILLITER
Alcohol Volume
Ply Wood 7mL METER
Length
Vicks Vapor Weight of mass

10gms grams
Rub
Water 500mL MILLITER Volume
Answer the following questions briefly and direct to the

point.
Why is measurement important?
Measurement is very important, because without measurement
we can’t be able to
determine what is the Length .Weight and other ways of
measuring of things. Measuring is important in any.
aspects because we are using it in our daily lives.
Why do we use a system to measures?
A measurement system allows us to make easier to measured
instead of doing Many Calculation of how much is the weight of
the thing that you want to know the measurement. When we
are Measuring we can use a tool like ruler to measure the
length of a Notebook.
How can we ensure our measurements agree With Others.
We can ensure measurement agree with other is by accuracy,
because accuracy measured of how closely your measurement
are, or how close to be exact.
Is what ways do we measure our world.
Ways, we can measure our world is by time, size distance,
velocity direction. Weight, volume, temperature Which we can
use for thing to measure or in any aspect as well.

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MARK LLOYD A.

BS CRIMINOLOGY 2ND YEAR.

b. 5 significant figures 24,582,000

c. 4 significant figures 24,580,000

d. 3 significant figures 24,600,000

e. 2 significant figures 25,000,000

B. Write the following numbers in scientific notation.

l. Kelvin scale 313 K

Activity #7. Based on your understanding on the lesson about measurements,

a. 890,000 8.90 × 10⁵

b. 0.000,000,031 3.1 × 10-8

c. 0.001, 456 1.456 × 10-3

d. 677 6.77 × 10²

B. Express the following in standard notation.

b. 4.56 x 103 4560

c. 7.60 x 10-6 0.000,007,600

d. 3.44 x 105 344,000

e. 9.8 x 10-2 0.098

C. Determine if each of the following is an exact or measured quantity having

b. The number of students in a class. Measured Quantity

b. The number of students in a class. Measured Quantity

d. A dozen of eggs on the table. Exact Quantity

e. Annual meeting of the company. Measured Quantity

D. Explain why 0.002,304,0 grams is a measurement having 5 significant.

Make a list of 10 items in your house that have metric measurements.

ITEM METRIC UNIT TYPE OF

Perfume MILLITER Volume

Air 250mL MILLITER Volume

Vicks Vapor Weight of mass

Water 500mL MILLITER Volume

Answer the following questions briefly and direct to the

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