1. Define and explain…
   a. Law and theory
   
   b. Theory and experiment
   
   c. Qualitative and Quantitative
   
   d. Hypothesis and theory
   
   
2. Is the scientific method suitable for solving problems only in the sciences?
   No, It Can be applied in a real and common problem of life
   
   
   
3. Define and explain the exactitude of one of this meditation instruments
   
   
   
   
   
   
   
4. Explain how density can be used as a convertion factor to convert the volume of an object to the mass of an object and vice verse.
   
   
   
   
   
5. Distinguish between physical changes and chemistry changes.
   
   
   
   
   
6. Why is the separation of mixture into pure or relatively pure substances so important portant when performing a chemical analysis.
   
   
   
   
   

 

 

1. The time and convertion
   how many minutes have a month?
   R= 40,320 or 43,200
   Why is different the result?
   Because any month has the same numbers of days. For example, February has 28 days but March has 31 days.
   
2. A bowl of pudding a bucketful of sand
   -Liquid. –Solid
   
3. It would be the same since they have the same volume
   
4. A Heterogeneous mixture of two different compounds
   
   a homogeneous mixture of an element and a compound.
   
5. Making: observations, hypothesis, performing experiments
   Observations maybe qualitative or quantitative
   Hypothesis is a possible explication on a problem
   Experiments are carried to test the hypothesis
   
6. Homogeneous, heterogeneous Compound Element.
   
   
   
   
   
   
   
   
   
7. A)1 sf (sf= Significant figures)
   b) 2 sf
   c) 4 sf
   d) 2 sf
   e) 1 sf
   f)1 sf
   
   
   
   
8. A) 3 sf
   B) 4 sf
   c) 4 sf
   D) 1 sf
   e)7 sf
   F) 1 sf
   g) 3 sf
   h) 3 sf
   
   
   
9. 1.) 3.40 x10^4
   2. 1.035 x10^4
   3. 1.799 x10^2
   4. 3.37 x10^5
   
   
   
   
10. 188.12
    11.6
    4.1x10^-7
    6.26x10^-26
    4.9
    0.2240
    
    
    
    
11. A. 8.63 lbs and 20.23 in.
    B. 40,000 km and 40,000,000
    C. 0.01176 m^3 and 1.176 L , 462.99 in^3 and 38.58 ft.
    
    
    
    
12. = = 10.23 m/s
    D= 100 meters
    T= 9.77 s 10.23 M/s = 36.82 Km/h
    10.23 m/s = 33.54 ft/s
    

Convert this temperatures (K) to Celsius and Fahrenheit