H-Chemistry Challenge Problems: Conversions
*Give these your best shot! Take some time initially to plan out your strategy. Answers are at the bottom.
1) Arrange the following items in order from shortest to longest:
a 57 cm length of string,
Calculating with Measured Values
Example A - Adding and Subtracting
1. What is the mass of the student?
2. What is the mass of the school bus?
3. A) What is the new mass of the bus once the student gets on it?
B) How would this mass be read using the bus
i , ( ) 5 lpO
Y i l q\H
o- F+_- *
'CD) R * l
I I\ g
H-Chemistry Handout: SigFig Rules
1. Why are significant figures important in chemistry?
They help us to know how much confidence we have in a number
(How accurate a number is)
2. Determine the number of sig figs in the following measurements.
a) .4561 4
Post-Lab Questions: ANSWERS!
1. Using both data tables (part I and part III), determine which type of gas was collected in tube A
and in tube B. Justify your response using your observations of the properties of matter.
Tube A = Oxygen gas (O2), since thi
H-Chem Midterm Rev w: A compilation of questions that you have faced this year...
1. On the line beside each number below, indicate the number of signicant gures for that number:
5800 3 0.053900 5 1.00 3 10 I 1.530x10'f5 y
2. Indicate the