Lab Safety and Procedure
A piece of equipment used in lab to protect your eyes
What is Goggles?
What is the difference between qualitative vs quantitative measurements.
Qualitative data is based on observations
Quantitative data is collected numerical values
Convert 1 kilometer to meters
1000 meters
Convert the following into scientific notation: 1,000,000
1.0 x 10^6
The three subatomic particles are __________, __________, and __________.
proton, neutron and electron
The operation a scientist must do before weighing on a scale.
What is to tare?
cm3 is equivalent to what unit?
What is mL?
Convert 5.6 × 10⁴ mg to grams.
56 g
Convert the following into scientific notation: .005
5.0 x10^-3
Define atomic number
The atomic number of an element is equivalent to the number of protons in the elements nucleus.
The lowest part of the water line when reading a graduated cylinder.
What is a meniscus?
What is the term for "the degree of closeness between a measured value and the true, accepted, or standard value"?
What is Accuracy?
What does the prefix centi- represent numerically?
0.01
Convert the following into standard notation: 1.2 x 10-4
.0012
What two subatomic particles have the same mass?
Protons and neutrons
How must hot glassware be transferred from hot plate to counter?
Using an oven mit or tongs
The three units used for measuring volume
mL, L and cm3
2000 mg to kg
.002 kg
Perform the following calculations and put in proper scientific notation.
(4.2 x 10-2 ) x (6.208 x 104 )
2.607 x103
Define isotope
An isotope is an element with a known number of neutrons in the nucleus.
What is the percent error formula?
"absolute value of theoretical minus the experimental divided by the theoretical value times 100%"
What are the units for Density?
g/ml or g/cm3
Convert 136 hectometers to micrometers in scientific notation
1.36 x 1010 micrometers
Perform the following calculations and put in proper scientific notation. (8.79 x 103) – (3.11 x 10-4)
8.79 x 103
Why is the atomic mass of an element not a whole number?