Lab Safety/Metric Measurements/Unit Conversions

1.  When heating a solution in a test tube, a student should

• point the test tube in any direction

• hold the test tube with two fingers

• cork the test tube

• wear goggles

Base your answer on the diagram to the left and on your knowledge of science.

Which statement describes two unsafe laboratory practices represented in the diagram?

• The flame is too high and the test tube is unstoppered.

• The opening of the test tube is pointed toward the student and the student is not wearing goggles.

• The test tube is unstoppered and the student is not wearing goggles.

• The beaker has water in it and the flame is under the tripod.

Which group of measurement units is correctly arranged in order of INCREASING size?

• millimeter, centimeter, decimeter, meter

• millimeter, decimeter, centimeter, meter

• meter, decimeter, centimeter, millimeter

• meter, hectometer, dekameter, kilometer

8 kilometers = ________ meters

• 800

• 80,000

• 8,000

• .008

1000 m = ___________ km

• 100
• 10
• 1
• 0.1

What is the volume of the liquid in the graduated cylinder ?

• 38 mL
• 35 mL

• 40 mL

• 39 mL

What is the length of the green object?

• 9.4 cm
• 94 liters

• 10 cm

• 9.1 ml

What tool do you use to measure length?

• triple beam balance

• graduated cylinder

• thermometer

• ruler

What happens to the decimal point in the number when you are converting from a smaller metric unit to a larger unit?

• Converting doesn't require a placement of decimal point.

• The decimal place moves to the right.

• The decimal place moves to the left.

Less Than, Greater Than, Equal To

195 ml ________ .195 L

• Less Than

• Greater Than

• Equal To