Measurements in Chemistry

Chemistry can be defined as the study of ...

• the environment and the solution to environmental problems

• motion, force, and energy

• the composition of matter and the changes it undergoes

• living organisms

What is the SI unit for mass?

• kg

• mol

• g

• kelvin

What is the SI unit for length?

• meter

• kg

• kelvin

• mol

What is the SI unit for temperature?

• kelvin

• celsius

• fahrenheit

• joule

How close a series of measurements are to each other is known as

• accuracy

• precision

• error

• significant figures

Which is more precise for measuring time?

• a digital clock that measures to the tenth of a second

• 
  a clock with minute and hour hands

• a digital stopwatch that measures to the hundreth of a second

Tags

NGSS.MS-PS4-3

How many significant figures are in the measurement 0.00130 cm?

• 5

• 2

• 3

• 4

How many significant figures are in the measurement 2.40 x 10^-5 cm?

• 5

• 2

• 3

• 4

How many significant figures are in the measurement 2200 cm?

• 5

• 2

• 3

• 4

How many significant figures are in the measurement 45000. cm?

• 5

• 2

• 3

• 4