Show:
Atoms and Elements
Light and Energy
Electrons
Chemical Bonds
Periodic Table
100
How many protons does Oxygen have?
8 protons
100
Are energy levels closer to or farther from the nucleus lower energy?
closer to the nucleus = lower energy
100
Draw the Lewis Dot structure for magnesium
. Mg .
100
What kind of bond holds Na and Cl together?
Ionic
100
As the atomic number increases on the periodic table, what happens to the atomic mass?
The atomic mass also increases.
200
Which atomic particles are included when calculating atomic mass?
Protons and Neutrons
200
What happens to electrons as an atom absorbs energy?
They go from the ground state to an excited state.
200
If an element has 7 electrons, what is its electron configuration?
1s^2 2s^2 2p^3
200
Why do some chemical bonds form polar molecules?
They have one side of the molecule that is electronegatively unbalanced/non symmetrical from the other.
200
Elements in the same ____?_____ behave similarly based on their number of valence electrons.
GROUP
300
If an element is electrically neutral (has no charge), then there must be equal numbers of which two atomic particles?
protons and electrons
300
What happens when electrons return to their original energy level?
they let off light
300
Draw the quantum states and how they are filled using arrows for oxygen.
1s 2s 2p ^ V ^V ^V ^ ^
300
What kind of bond is formed when electrons are SHARED between two atoms?
Covalent Bond
300
Elements in groups _____ and _____ contain the most reactive elements on the periodic table.
1 and 7
400
Some elements come in different forms which have different masses. What are these forms called and how did they get different masses?
Isotopes have varying numbers of neutrons.
400
Which colors of light in the visible electromagnetic spectrum have the least energy?
RED
400
What is the Lewis Dot Structure for C2H3Br
H H \ / C = C / \ H Br
400
What shape does NH3 make?
Trigonal Pyramidal
400
Where on the periodic table is the atomic radius the greatest?
Bottom Left
500
Ion Mg^2+ has how many protons, neutrons and electrons?
12 protons, 12 neutrons and 10 electrons
500
Red light has a longer wavelength that green light. Which light has a greater frequency?
Green
500
What does the Pauli Exclusion principle state?
No 2 electrons can fill the same quantum state.
500
What shape does ClF5 make?
Square pyramidal.
500
What is the MOST electronegative element on the periodic table?
Fluorine