Pre-Lab: Densities of Solids

What is interchangeable with g/mL?

g/cm³

What units are typically used for the densities of gases?

g/L

What type of property is density (intensive/extensive)?

Intensive

What type of liquid does an irregular object need to be placed in to measure density?

A lower density liquid

What is a possible source of error for measuring density by liquid displacement?

Air getting trapped in the nooks and crannies of the irregular object

How can a possible source of error for measuring density by liquid displacement be avoided?

Carefully lower the object into the liquid or gently shake the liquid

What is the volume of a sphere?

4pi/3*r³

When is a linear regression useful for data analysis?

When the data is dependent on multiple variables

What does the sign of the correlationi coefficient indicate?

Whether the data tends above or below the trend line

How can we avoid breaking our graduated cylinder when dropping in the element?

Fill it with as much liquid as possible without going over the measurement capacity, use tweezers, hold the graduated cylinder at an angle, and insert the element partway into the graduated cylinder before dropping it