Weather
a large, tall, and dense cloud that often produces heavy rain and thunderstorms.
Cumulonimbus cloud
these particles are the smallest unit of an element that retains the chemical properties of that element
Atoms
A row of elements in the periodic table
A period
Mass/volume is the formula for which of the following?
a. volume
b. surface area
c. density
Density
When permitted, what is the proper technique to use when attempting to smell a chemical?
Wafting
The state of the atmosphere in a region over a short period of time.
Weather
The atomic number of an atom is the total number of ____________ in the nucleus.
a. protons and neutrons
b. protons and electrons
c. protons
d. neutrons
Protons
Elements that are poor conductors of heat or electric current
Nonmetals
You would use this to find the volume of a shape of irregular size
Water displacement
You should wear these on your hands when handling chemicals
Gloves
an imaginary line drawn around the middle of Earth, halfway between the north and south poles.
Equator
These two sub-particles make up the entire mass of the atom and are approximately the same size.
Protons and Neutrons
The man that developed the periodic table of elements in the 1860's
Mendeleev
L x W x H
When you are finished an experiment you should do this with your chemicals
the amount of water vapor in the air.
Humidity
A Proton
Columns in the periodic table
groups
Some element symbols and names derive their origins from these two languages
Greek and Latin
It is always important to use these ocular devices to protect vision during experiments
an instrument used to measure the amount of liquid precipitation.
Rain Gauge
This was JJ Thompson's model of an atom. It was the first model to include subatomic particles.
The pudding model
The periodic table is arranged by this.
When the temperature drops for a liquid it becomes this
solid
If you get chemicals on your skin during an experiment you should do this.
Wash the exposed area with water thoroughly