Atoms
What is the difference between an atom and a molecule?
an atom is a single element, a molecule is two or more elements
What is the difference between kinetic and potential energy?
Kinetic energy - energy due to motion
Potential energy - stored energy
The lowest possible energy level an electron is in is known as the ground state. What is it called when an electron gains energy and is in a higher energy level?
The excited state
How many electrons can each orbital hold?
2 electrons
How is the number of valence electrons determined?
Based on the group number
Which of the following examples are elements?
Ne, Li, CO2, N2, CaO, H
Ne, Li, and H
Which state of matter has the highest kinetic energy?
gas
What causes an atom to produce light?
When the electron moves from a higher energy level to a lower energy level.
Which atomic model show electrons orbiting the nucleus of an atom?
The Bohr model
How many valence electrons does sulfur have?
5
Which of the following examples are molecules?
H2O, Si, CaO, NaCl, H, Cu
H2O, CaO, and NaCl
Which of these molecules would have the greatest kinetic energy?
SiO2 (s) NO (g) H2O (l)
NO (g)
Which two elements have similar properties based on their groupings in the periodic table. (ptable.com)
Li, O, Na, B, Cl
Li and Na
Which atomic model uses atomic orbitals to describe the probable location of any electron in a three-dimensional space?
The quantum mechanical model
What are valence electrons?
The electrons in the outermost shell of an atom
What is matter?
Anything that has mass and occupies space.
Which of these molecules would have the greatest kinetic energy?
CO (g) Na2O (s) NaOH (l)
CO (g)
Spectrum Comparison Diagram
https://docs.google.com/presentation/d/1G0A1PQzwrYeMNq8CxIzs2znRY_KEtzoCdL3H8NYPILo/view#slide=id.p
Element A and D
What does the superscript number in the electron configuration describe?
The number of electrons in the subshell
Name one element that has 1 valence electron.
H, Li, Na, K, Rb, Cs, Fr,
The formula for a molecule of ethane is C2H6. An ethane molecule is made up of how many atom(s) of Carbon and how many atom(s) of Hydrogen?
C2H6
2 Carbon
6 Hydrogen
Which state of matter would you expect it to have the greatest potential energy?
Solid
How are elements on the periodic table grouped
Based on similar physical and chemical properties
Draw an electron dot structure for an element in Group 17 of the periodic table.