Balancing Equations
H2+O2 - H2O
2H2+O2 - 2H2O
1 mol of Carbon-12 weighs exactly _g.
12g
Define a chemical change
A change producing a different kind of matter from the original kind of matter.
What is electromagnetic energy?
energy that travels through space as waves and includes light, radio waves, and X-rays
What was the name of the potential new planet?
K2-18b
Na+Cl2 - NaCl
2Na + Cl2 - 2NaCl
Where was Avagardo from?
Italy
Define Plasma
A gaseous state of matter containing a large number of electrically charged atoms and/or molecules.
what's the speed of light?
C= 2.998x10^8 m/s
What ethnicity was Einstein?
Jewish
Fe2O3+C - Fe+CO2
2Fe2O3+3C - 4Fe+3CO2
Ionic Compounds Do/Do not exist as molecules
Do Not
Define Alpha Particles
positively charged particles consisting of two protons and two neutrons
what is amplitude?
extent of the displacement caused by a wave
Is sand soluble or insoluble?
C4H10+O2 - CO2+H2O
2C4H10+13O2 - 8CO2+10H2O
What is the sum of the average masses for all atoms represented in chemical formula?
Formula mass
What is the fundamental unit of charge also known as?
Elementary unit of charge
what is plank's constant ?
A very tiny number that relates the energy of a photon to its frequency and it's represented by the letter h.
118
C2H6+O2 - CO2+H2O
What is Avagardo's number?
6.022 x 1023
What is a spacial isomer?
Compounds in which the relative orientations of the atoms in space differ.
An FM radio station found at 103.1 on the FM dial broadcasts at a frequency of 1.031x10^8 s-1 (103.1 MHz). What is the wavelength of these radio waves in meters?
2.91 meters
What is the most common gas is earth's atmosphere?
Nitrogen