CHM1025C
Module 2 Pretest Homework Packet Name:_Answers__
Module Two: ChemMath and Measurement (Corwin Chapters PSS & 2)
A. _____(05) Significant Figures- Section PSS.2 Answers
B. _____(05) Round Off/Math of Significant Figures- Section PSS.2 Answers
C. _____(05) Scientific Notation Section PSS.6 Answers
D. _____(05) Metric Basic Units /Numerical Prefixes- Section 2.1Table 2.1 2.2Answers
E.
_____(05) Metric System
Conversion Factors- Section 2.2-2.3 Answers
F. _____(10) Unit Analysis Sections 2.3, 2.4, 2.5 Answers Pretest #2 Ans2 Online Site
G. _____(05) Temperature Conversion Section 2.9 Answers
H.
_____(05) Density/Specific
Gravity Calculations Section 2.6-2.7-2.8Answers
I. _____(05) Specific Heat Calculation/Ice Cube Problem Section 2.10 Answers
_______(50) Total = ______%
M _____(25) Multiple Choice (Measurement) Chapter PSS and 2 (In Blackboard)
Module Two: Homework Packet
Module Two-Part A: Significant figures 5 points
In the
blank, state the number of significant figures in each of the following
measurements:
__1_1.
0.05 mL
__4_2.
250.0 cm
__3_3. 456,000,000 people
__1__4.
1000 g
__4__5. 0.00006500 moles
__3__6.
0.00200 kg
__1__7.
50 seconds
__3__8.
50.0 Seconds
__4__9.
50.00 Seconds
__1__10.
0.05 Seconds
Significant Digit Animation:
http://www.lsua.info/chem1001/Chap2-3Movies/sigdigit.html
Additional Homework (not required) for your practice:
Corwin 7th edition:
Page 25 Questions #9 -14