Podcast
Questions and Answers
What is the correct approach to convert between units of measurement?
What is the correct approach to convert between units of measurement?
- Multiply the given quantity by a conversion factor that cancels the initial unit and leaves the desired unit (correct)
- Add a conversion factor to the given quantity that cancels the initial unit and leaves the desired unit
- Subtract a conversion factor from the given quantity that cancels the initial unit and leaves the desired unit
- Divide the given quantity by a conversion factor that cancels the initial unit and leaves the desired unit
In the example of converting the height of Angel Falls from miles to kilometers, why was the conversion factor with kilometers in the numerator used?
In the example of converting the height of Angel Falls from miles to kilometers, why was the conversion factor with kilometers in the numerator used?
- To cancel out the miles unit and leave the kilometers unit (correct)
- To cancel out the kilometers unit and leave the miles unit
- Because kilometers are smaller than miles, a smaller conversion factor is needed
- Because kilometers are larger than miles, a larger conversion factor is needed
If a quantity is given in a larger unit and needs to be converted to a smaller unit, what will happen to the numerical value?
If a quantity is given in a larger unit and needs to be converted to a smaller unit, what will happen to the numerical value?
- The numerical value will remain the same
- The numerical value will increase (correct)
- The numerical value will decrease
- The numerical value may increase or decrease, depending on the specific units
In the example of converting the length from centimeters to inches, what are the equivalent quantities needed to construct the conversion factor?
In the example of converting the length from centimeters to inches, what are the equivalent quantities needed to construct the conversion factor?
Which of the following is an example of a physical change?
Which of the following is an example of a physical change?
What is the measured quantity in the given example of buying speaker wire?
What is the measured quantity in the given example of buying speaker wire?
What is the importance of including units in all calculations?
What is the importance of including units in all calculations?
Which of the following is true about conversion factors?
Which of the following is true about conversion factors?
If a car travels at 60 miles per hour, how many feet does it cover in an hour? (1 mile = 5280 feet)
If a car travels at 60 miles per hour, how many feet does it cover in an hour? (1 mile = 5280 feet)
What is the purpose of using equivalent quantities to construct conversion factors?
What is the purpose of using equivalent quantities to construct conversion factors?
In chemistry, what do measured quantities consist of?
In chemistry, what do measured quantities consist of?
Why should a person's height be expressed as '6 feet' instead of just '6'?
Why should a person's height be expressed as '6 feet' instead of just '6'?
What is the primary focus of the study of chemistry?
What is the primary focus of the study of chemistry?
Which of the following is an example of a physical property?
Which of the following is an example of a physical property?
What is the difference between a physical change and a chemical change?
What is the difference between a physical change and a chemical change?
Which of the following is a measured quantity in chemistry?
Which of the following is a measured quantity in chemistry?
What is the importance of units and conversion factors in chemistry calculations?
What is the importance of units and conversion factors in chemistry calculations?
Which of the following is an example of a problem-solving approach in chemistry?
Which of the following is an example of a problem-solving approach in chemistry?
