Name: _____________________________________ Date: ________ Hour: ________ Chemistry Unit 1 Study Guide x The following are things you should be able to do: o Scientific notation o Significant figures o Dimensional analysis given conversion factors 1. List the steps usually followed in the scientific process: 1. ___________________________________________________________________ 2. ___________________________________________________________________ 3. ___________________________________________________________________ 4. ___________________________________________________________________ 5. ___________________________________________________________________ 2. Explain the difference between quantitative observations and qualitative observations. 3. Know the difference between an inference and observation. a) Observation: _______________________________________________________________ b) Inference: _________________________________________________________________ c) Describe a situation in which you have made an inference ___________________________ _______________________________________________________________________________ 4. Be able to distinguish between independent variables and dependent variables. Look at the following experiments and list the independent variable (IV) and the dependent variable (DV) for each. a) How does daily flossing affect the number of cavities that a person acquires? IV: _________________________ DV: _________________________ b) How does the number of hours of sleep a student gets at night affect his/her performance in math class? IV: _________________________ DV: _________________________ c) How does using technology in the classroom affect a student’s participation in class? IV: _________________________ DV: _________________________ Define problem Hypothesis Test hypothesis Analyze data Draw conclusions Quantitative has numbers, qualitative is just a description.
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4. Be able to distinguish between independent variables and dependent variables. Look at the following experiments and list the independent variable (IV) and the dependent variable (DV) for each. a) How does daily flossing affect the number of cavities that a person acquires?
b) How does the number of hours of sleep a student gets at night affect his/her performance in math class? IV: _________________________ DV: _________________________
c) How does using technology in the classroom affect a student’s participation in class?
Measure the following lines and record the lengths in centimeters, millimeters, and meters. 27.
__________ cm __________mm __________ m 28.
__________ cm __________mm __________ m (Must show your work using dimensional analysis)
29. Convert 5.3 hours to years.
30. Convert 6m/s to km/hr.
31. Convert 18 miles/hr to feet/min Write the following number in scientific notation:
32. 300,000,000 m/s _______________________________ 33. 0.000000000000056708 km _______________________________ 34. 2.01 m _______________________________ 35. 602,000,000,000,000,000,000,000 _______________________________