Electrons
How many electrons are in the code 1s2?
2 electrons
Can elements be broken down?
No
What are rows on the periodic table called?
periods
Atoms bonded together is called what?
What is frequency measured in?
Hertz (Hz)
How many electrons fit in a d sublevel?
10 electrons
What elements are on the left side of the periodic table?
Metals
How is the periodic table organized?
by properties
What is the amount of energy it takes to move an electron from an atom?
ionization energy
What is the equation for energy?
E=h(f)
What are the electrons on the outermost energy level called?
valence electrons
What are the elements located in between the metals and nonmetals called?
metalloids
Elements are in groups on the periodic table based on what?
Chemical Properties
True or False: Atoms are not made up of anything smaller?
False
What always is speed of light?
2.998 x 10 to the 8th
What happens when an electron falls from a high energy level to a lower energy level?
light is emitted
What is the base element of C12?
Carbon (C)
What does the atomic number represent?
Number of protons and electrons
Are atoms positively or negatively charged?
negatively charged
The color of light can be described by its…?
Wavelength
True or False: When electrons are excited they jump up energy levels
True
Is color a chemical or physical property of an element?
physical property
What are the elements on the far right row of the periodic table are called?
noble gases
What is smaller than atoms?
subatomic particles
True or False: An x-ray is an electromagnetic wave?
True