West Coast University Week 1 Chemistry Lab Questions1 l

Answer Q1-Q5
1. What are the standard units of length, mass, volume, and temperature in the metric system?
2. Why is the metric (SI) system called a decimal system of measurement?
3. What is the purpose of using prefixes in the metric system?
4. Fill in the blank lines below with the unit name, abbreviation, and property measured.
Unit Name
Abbreviation
Property Measured
L
centimeter
km
mg
5. Identify each of the following as a measured number or an exact number:
Answer Q1-Q5
1. What are the standard units of length, mass, volume, and temperature in the metric system?
2. Why is the metric (SI) system called a decimal system of measurement?
3. What is the purpose of using prefixes in the metric system?
4. Fill in the blank lines below with the unit name, abbreviation, and property measured.
Unit Name
Abbreviation
Property Measured
L
centimeter
km
mg
5. Identify each of the following as a measured number or an exact number:
A. Measuring Length
PAGE
Answer A. 1-4
ON
THE NEXT
1. What units are represented by the numbers marked on the meterstick?
What do the small lines marked on the meterstick represent?
Complete the following statements:
There are centimeters (cm) in i meter (m).
There are millimeters (mm) in i meter (m).
There are millimeters (mm) in i centimeter (cm).
Item
2. Length
USE GRAPH
3. Estimated
Digit
4. Number of
Significant
Figures
Document. WITH ILLUSTRATIONS!
Width of little fingernail
Distance around wrist
Length of your shoe
5. Length of line
Your measurement
Other students’ values
How does your value of the line length compare to those of other students?
B. Measuring Volume
Answer
QUESTIONS
BI.-B4 THEN
THEN C1-C4
Volume of a liquid (include units for every measurement)
Cylinder 1
Cylinder 2
Cylinder 3
1. Volume (mL)
Volume of a solid by displacement
2. Initial volume of water
3. Volume of water and submerged solid
4. Volume of solid (3-2)
C. Measuring Mass
Item
1. Mass
4. Number of Significant Figures
1. Beaker
Stopper
Evaporating dish
2. Unknown #
3. Actual mass of unknown
Q2 State the number of significant figures in each of the following measurements:
PAGE 1o.
Do The
The following
4.5 m
204.52 g
0.0004 L
625.000 mm
805 lb
34.80 km
Q3 Indicate the estimated digit in each of the following measurements:
1.5 cm
4500 mi
0.0782 in.
42.50 g
48.231 g
8.07 lb
2 Pre-Lab Study Questions
PAGE 17.
Answer Question
1-4
Date
Name
Section
Team
Instructor
1. What are the rules for rounding off numbers?
2. How do you determine the number of significant figures for an answer obtained by multiplication or division?
3. How do you determine the number of decimal places for an answer obtained by addition or subtraction?
4. What is an equality and how is it used to write a conversion factor?
5. Write the equality and conversions factors for the relationship between miles and hours for a car traveling at 55 mi/h.