Unit Test Answers

A class is using marshmallows to demonstrate different chemicals’ properties by heating and cooling the marshmallows. Which student is practicing bad laboratory safety?

Which is the SI base unit for mass?

Alpa wants to change 0.54 kilometers into a smaller metric unit. She will have to

Hunter is in lab. He clears a spot on his lab bench to start working. He also puts his lab coat and goggles on. He then identifies where all of the safety equipment is. He notices his station is next to the fume hood, which ventilates the chemicals stored there. The noise of the fume hood was bothersome, so Hunter turned it off.Which could be an error in his set-up?

Alisha organizes her data about the element lead into a table.Which did Alisha place in the wrong column?

Scientists in a particular field strive for the same quality of work because they know their peers will be reviewing their scientific claims. What does this review process help ensure?

Ingrid wrote the hypothesis below.If the temperature of a liquid increases, the density of the liquid decreases because the particles move farther apart.What are the variables in her hypothesis?

Saul converts 2.392 hectoliters to liters. What should his new number be?

Which best describes the purpose of bar graphs?

Why is newton's first law of motion considered a law and not a theory?

Material safety data sheets are used to give the information about a solvent. The excerpt below is part of an MSDS.

Which is a scientific claim?

A scientist wants to use a model to help present the results of his detailed scientific investigation. Why would a model be useful?

Read the measurement.