Unit 1: Measurement and Density

When working with chemicals in the laboratory never ...

• wear goggles

• wash eyes for 20 minutes if chemical in eyes

• leave without completely cleaning your lab station

• wear an apron

What is the unit and how do we measure length in the lab?

• mL, graduated cylinder

• g, electronic balance

• cm, ruler

• cm3, beaker

What is the unit and how do we measure mass in the lab?

• m, meter stick

• g, electronic balance

• mL, graduated cylinder

• cm3, graduated cylinder

What is the unit and instrument we use to measure the volume of a liquid in the lab?

• mL, graduated cylinder

• cm3, ruler

• L, electronic balance

• g, hot plate

1 mL = ____

• 100 cm

• 1 L

• 1,000 L

• 1 cm3

The ratio that compares the mass of an object to its volume is _______.

• % error

• density

• % by mass

• 1 mL = 1 cm3

I make a density column, the most dense layer is at the top and the least dense is at the bottom.

• True

• False

What is the density of this object?

• 1 g/mL

• 100 g/mL

• 10 g/mL

• 0.1 g/mL

What method would I use in the lab to find the volume of a ring?

• flame test

• atom inventory

• water displacement

• distillation

Name the curved line liquids create that we use to read measurements on thermometers & graduated cylinders?

• vapor

• meniscus

• forcep

• weigh boat