Semester Exam Review

Which instrument measures the length of an object?

• beaker

• graduated cylinder

• triple beam balance

• meter stick

What mass is shown on each of the following balance?

• 200.11g

• 210.91g

• 485.0g

Measure the following volumes.

• 85 ml

• 82 ml

• 80 ml

If you do not understand a direction or part of a laboratory procedure, you should

• figure it out as you do the lab.

• try several methods until something works.

• ask the teacher before proceeding.

• skip it and go on to the next part

After completing an experiment, all chemical wastes should be

• left at your lab station for the next class.

• disposed of according to your teacher's directions.

• dumped in the sink.

• taken home.

Horseplay, practical jokes, or pranks in the lab are

• always against the rules.

• okay.

• not dangerous.

• Okay if you are working alone.

When you finish working with chemicals, biological specimens, and other lab substances, always

• treat your hands with skin lotion.

• wash your hands thoroughly with soap and water.

• wipe your hands on a towel.

• wipe your hands on your clothes.

Before you leave the science room, you should

• clean your work area and equipment.

• return all equipment to the proper area.

• wash your hands with soap and water.

• All of the above.

When you work in the lab, long hair must be

• Cut off

• Tied back out of the way

• Held by both hands

• Combed nicely

Lisa boiled 5 cups of water in the pot. This is an example of a (n)

• Qualitative observation

• Quantitative observation

• Inference

• Conclusion