A
Round 6.987 to 2 significant figures.
7.0
What is 1,000,000.00 in scientific notation?
1 x 106
Reading the meniscus from above or below eye level every time. What type of systematic or random error is this?
Parallax Error
The process of assigning numbers to represent quantities
Measurements
What is the SI unit of mass?
kilogram (kg)
Is the number 20500 two, three, four, or five sig figs?
three
How many significant figures are in 0.00400?
3
Express 0.005 in scientific notation
5 x 10-3
In a weighing experiment, the scale is incorrectly zeroed and gives results 5 grams too high every time. What kind of error is this?
systematic
A student reads the thermometer at slightly different angles each time. What kind of error is this?
random
What does the SI unit “mol” measure?
AMOUNT OF SUBSTANCE
Round 345 to 5 significant figures
three countries that officially use the British (Imperial) system of measurement (either fully or partially)
USA, LIBERIA, AND MYANMAR
Write 7.2 × 10-⁴ in standard form
0.00072
What is the difference between accuracy and precision?
Accuracy refers to the closeness of a measurement to the true value; precision refers to the consistency of repeated measurements.
What is the SI base unit for temperature?
KELVIN
Which derived SI unit is used for force?
Newton
How many millimeters are there in 3.45 meters?
3,450
0.05
A student gets 3 values: 5.01 mL, 5.00 mL, 5.00 mL, but true value is 5.50 mL. Is this precise, accurate, or both?
PRECISE