Unit 1 Review - SigFigs, Density, Scientific Method, etc

the proper way to express 34567.01 in scientific notation WITH three significant figures is...

• 346 x 10²

• 3.45 x 10⁴

• 3.46 x 10⁴

• 350

The number 5003.20 has ....

• 4 sigfigs

• 2 sigfigs, same as decimal places

• 6 sigfigs

What is the proper way to report this calculation ?

17.34 / 3.45?

• 5.026 because the 17.34 has the most sigfigs

• 5.03 because the 3.45 has the fewest sigfigs

• 5.026087 because you need the most decimal places for accuracy

• 5 because you should round the final answer to the nearest whole number

0.006 has ________ significant figures (sigfigs)

• 4

• 3

• 2

• 1

You are handed a liquid in a test tube and you want to know the volume of the liquid as precisely as possible, which piece of equipment is best to use?

• a beaker

• an Erlenmeyer flask

• a pipet

• a graduated cylinder

A control is

• the group that changes

• the group that doesn't change

• the group that is tested by two variables

• the person in charge

Tags

NGSS.HS-PS1-3

The variable that is manipulated (changed) on purpose is the (cause)

• dependent variable

• control

• independent variable

• experimental group

Tags

NGSS.MS-PS2-2

What is the density of water?

• 2.0 g/mL

• 1.0 g/mL

• 1.2 g/mL

• .92 g/mL

Substances that are less dense than water will __________ on water.

• sink

• float

It is a measure of how close measurements come to each other when they are made in the same way

• Accuracy
• Precision
• Error
• Extrapolation