Lab Safety
Soil Science
Density
Precision & Accuracy
Periodic Table & Elements
100
In this type of chemical exposure, you breathe chemicals in.
What is inhalation?
100
Phosphorus, nitrogen, and this nutrient are considered the three essential nutrients for plants.
What is Potassium?
100
The equation for density is mass divided by this.
What is volume?
100
This refers to how close a measurement is to the true or accepted value.
What is accuracy?
100
These two subatomic particles have a mass of 1 amu.
What are protons and neutrons?
200
True or False. If you have to access a chemical container multiple times during a lab, you may leave the lid off the container until the end of the lab.
What is false? You need to close the container immediately to avoid contamination
200
This soil horizon forms last.
What is the B horizon?
200
An object that has a density less than 1 g/cm3 will do this on water.
What is float?
200
The X's on the target is an example of this.
What is neither precision or accuracy?
200
The area of an atom that makes up most of its volume.
What is the electron cloud?
300
During this kind of chemical exposure, chemicals enter through the skin or other body surfaces (eyes, mucous membranes, a cut etc.)
What is Absorption?
300
This material is a dark colored substance that forms as plant and animal remains break down.
What is Humus?
300
DAILY DOUBLE
This technique can be used to to find the density of an irregularly shaped object.
What is the water displacement technique?
300
True or False. The terms precision and accuracy refer to two distinct concepts.
What is true? Precision and accuracy are independent of each other.
300
The horizontal rows on the periodic table are called this.
What are periods?
400
DAILY DOUBLE
True or False. You should poor acid into water, not the other way around.
True! Do whatcha otta pour acid into wataa
400
This soil texture is typical found in horizon B. It is lighter in color and feels smooth/silky.
What is clay?
400
These are the units for the volume of the cube.
What is cm3?
400
This term means how close two or more of your results are from one another.
What is precision?
400
Carbon-12, Carbon-13, and Carbon-14 are examples of this.
What is an isotope?
500
In the acronym P.A.S.S, the P stands for this to help remember how to use a fire extinguisher.
What is pull out the pin?
500
A soil with a pH of 8.0 is considered this on the pH scale.
What is basic or alkaline?
500
True or False. It does not matter if you have a big or small amount of your substance, it will have the same density.
What is true? Density is a ratio, so the density will stay the same regardless of the size of the substance.
500
The darts are an example of this on the target.
What is both precision and accuracy?
500
The model used to show the structure of an atom is named after this physicist.
Who is James Chadwick?