Module 1 Lesson 2

​Module 1 Lesson 2

Measurement

Multiple Choice

What is the SI unit for time?

• minutes

• hours

• seconds

Multiple Choice

What is the SI unit for length?

• Feet

• Meters

• Miles

Multiple Choice

What is the SI unit for temperature?

• Farenheit

• Kelvin

• Celsius

SI Base Units

Time - seconds
Length - meter
Mass - kilogram
Temperature - Kelvin
Amount of a substance - mole
Electric current - ampere
Luminous intensity - candela

Multiple Select

Mass measured in lab will tend to be small. Which of the following will chemists USUALLY use to measure mass? (more than one may be correct)

• pounds

• grams

• kilograms

• milligrams

Open Ended

How many milligrams are in one gram?

Multiple Choice

Which of the following is the correct temperature conversion equation from Celsius to Kelvin?

• K = C - 273

• K = 1.8 C + 32

• K = C + 273

Multiple Choice

Which of the following is NOT an example of a derived unit?

• Volume

• Mass

• Density

Derived Units

​Combination of base units

Volume - length x width x height

Density - mass / volume

Multiple Choice

What is 0.0034 in scientific notation?

• 34 x 10^-4

• 3.4 x 10³

• 34 x 10⁴

• 3.4 x 10^-3

Scientific Notation

0.0034

You need to move the decimal to the RIGHT 3 times

Scientific Notation

​3.4 x 10 ^-3

Coefficient Exponent
Must be between -3 because we 1 and 10 moved it to the right
3 spaces

Multiple Choice

How many significant figures is in the number 14.08?

• 3

• 2

• 4