Chapter 1

Question 1

What are the 7 fundamentally defined units?

Answer 1

1. Mass
2. Length
3. Time
4. Temperature
5. Electric Current
6. Amount of
7. Luminous

Question 2

What are the unit names for the following: Mass, Length, Time, Temperature, Electric Current, Amount of, Luminous.

Answer 2

1. Mass- Kilogram (kg)
2. Length- Meter (m)
3. Time- Second (s)
4. Temperature- Kelvin (K)
5. Electric Current- Ampere (A)
6. Amount of- Mole (mol)
7. Luminous- Candela (cd)

Question 3

How do you compute the number of significant figures an answer will have when multiplying or dividing?

Answer 3

The answer contains the least number of sig figs from the products.

Question 4

How do you compute the number of significant figures an answer will have when adding or subtracting?

Answer 4

The answer contains the same number of digits to the right of the decimal place of the smallest sig fig number.

Question 5

What are the three rules to rounding?

Answer 5

1. If the removed digit is less than 5, then the number kept remains unchanged.
2. If the removed digit is a 5 followed by zeros or no digit, the number kept remains unchanged if its an even number, increase if its an odd number.
3. If the removed digit is 5 or greater round up.

Question 6

Define precision.

Answer 6

Refers to how close a series of measurements are to one another.

Question 7

Define accuracy.

Answer 7

refers to how close the measurement is to the actual valeu.