Smart Peeps
The Greek philosopher Democritus coined what word for a tiny piece of matter that cannot be divided?
What is an atom?
What is the mass number of an atom that has 18 electrons, 20 protons, and 20 neutrons?
What is 40 amu?
Protons and ____________________ are found in the nucleus of an atom.
What are neutrons?
When an atom gains or loses energy, some of its ____________________ may move between energy levels.
What are electrons?
The difference between a sample of heavy water and regular water is that a hydrogen atom in heavy water has an extra ____________________.
What is neutron?
J. J. Thomson’s experiments provided evidence that an atom
What is contain negatively charged particles?
In order to get the mass number you must
What is add the protons and neutrons?
In Bohr’s model of the atom, ____________________ move in fixed orbits around the nucleus.
What are electrons?
The nuclei of isotopes contain different numbers of ____________________.
What is neutrons?
When all the electrons in an atom are in orbitals with the lowest possible energy, the atom is in its ____________________ state.
What is ground?
According to John Dalton’s observations, when elements combine in a compound,
What is the ratio of their masses is always the same?
If element Q has 11 protons, its ____________________ is 11.
What is atomic number?
An atom in which an electron has moved to a higher energy level is in a(an) ____________________ state.
What is excited?
This team has been called "America's Team"
Who are the Dallas Cowgirls?
1,1,2,3,5,8,13,__,34
What is the missing number?
What is 21?
Who provided evidence for the existence of a nucleus in an atom?
What is Ernest Rutherford?
If an atom of an element has a mass number of 32 and 20 neutrons in its nucleus, what is the atomic number of the element?
What is 12?
What does the electron cloud model describe?
What is the most likely locations of electrons in atoms?
What is 2?
What do scientists use to predict the locations of electrons in atoms?
What is probability?
In Niels Bohr’s model of the atom, electrons move
25% of new homeowners do this when the first move into a new house
What is replace the toilet seat?
In an atomic model that includes a nucleus, positive charge is
This in just two years, this team went from 0-16 to Super Bowl champions
Who are the Cleveland Browns?
The glowing of a neon light is caused by electrons emitting energy as they
What is go from higher to lower energy levels?