Lab Safety
This piece of personal protective equipment must be worn at all times when working with chemicals, heat, or glassware.
What are Safety Goggles?
A small, thin glass tube used to hold, mix, or heat small quantities of chemical samples.
What is a Test Tube?
The number 5,000 written in scientific notation.
What is 5 x 103 ?
Zeros located at the beginning of a number are not counted in significant figures.
What are leading zeros?
The standard metric base units for mass, length, and volume.
What are Gram (g), Meter (m), and Liter (L)?
What are closed-toed shoes?
The instrument used in modern science labs to quickly measure the mass of an object in grams.
What is a Digital Balance/Electronic Scale?
The number 0.0034 written in scientific notation.
What is 3.4 times 10-3 ?
The number of significant figures in the value 0.00520.
What is 3?
The number of grams contained in 1 kilogram.
What is 1,000?
If a chemical splashes into your eyes, you should immediately use this equipment and rinse for at least 15–20 minutes.
What is the Eyewash Station?
The rubber-coated tool specifically used to pick up and move hot beakers.
What are Beaker Tongs?
The standard number represented by 7.2 x 104 ?
What is 72,000?
The value 45.678 rounded to 3 significant figures.
What is 45.7?
500mL converted into Liters (L).
What is 0.5(L)?
The very first thing you should do if glass breaks, a chemical spills, or an injury occurs in the lab.
What is tell/notify the teacher?
A glass container with a flat bottom and a cone-shaped, narrow neck that allows easy swirling without spilling.
What is an Erlenmeyer Flask?
The standard number represented by 6.02 x 10-2 ?
What is 0.0602?
Zeroes located at the end of a number are only significant if this is present in the number.
What is a Decimal Point?
2.5 (cm) converted into millimeters (mm).
What is 25 (mm)?
The safe technique of waving your hand over a container to gently direct fumes toward your nose rather than inhaling directly.
What is Wafting?
A tall, narrow glass tool with marked lines used to precisely measure liquid volume.
What is a Graduated Cylinder?
The number 0.000415 written in scientific notation.
What is 4.15 x 10-4 ?
Zeroes located between non-zero digits (like in $505$) are always considered this.
What is Significant?/Sandwich zeroes?
0.045 km converted into meters (m).
What is 45 m?