Units and Measurements
What is mass?
Solids, liquids, plasma, and this phase make up the states of matter.
What is a gas?
These subatomic particles revolve around atoms and are responsible for chemical bonding.
What are electrons?
The vertical categories of the periodic table.
What are the columns/groups?
If you're measuring this kind of reaction from the outside, you'd feel an increase in temperature.
What is an exothermic reaction?
The amount of space that something takes up, can be calculated using its geometry.
Whenever you're measuring something out, it's the precise number of figures you can report.
What are significant figures?
The cluster of protons and neutrons in an atom, make up over 99% of its mass.
What is the nucleus?
Each of the 118 elements on the table has a unique one of these, which measures the number of protons.
Group 8 elements who think they're too good to hang out with other elements because of their full electron orbitals.
What are the noble gases?
Ouch, that's hot! This unit measures the thermal energy in an object in Celsius or Kelvin.
What is temperature?
Doesn't matter if it's the size of a planet or a grain of sand - this property of mass over volume doesn't change.
What is density?
What is an ion?
The maximum number of electrons that can exist in the valence, or outermost, shell.
These reactions need oxygen to occur, and release heat as a product.
What is a combustion reaction?
6.02 x 10^23 of something - atoms, ions, molecules, or whatever you want
What is a mole?
The ability of materials to transmit energy, such as electricity or heat.
What is conductivity?
The circles around the center of an atom? Sounds more like planets around the sun.
What is an orbit?
As you add more electrons to an atom, this value increases, and is highest in the lower-left corner of the table.
What is atomic radius (or atomic size)?
An ancient precursor to chemistry, the reactions in this field of study wanted to turn lead into gold.
What is alchemy?
A fancy way to describe when you're converting from one unit to another.
What is dimensional analysis?
An example of this is temperature, which changes depending on how much of a substance is present.
Elements like hydrogen, oxygen, and nitrogen hate being alone, so they form these in nature.
What are diatomic gases?
What is electronegativity?
This reaction of aluminum and iron can have some rather explosive results.
What is thermite?