The Guys Behind It All
What structure did Rutherford discover was in an atom after his gold foil experiment?
What is : A nucleus
Three subatomic particles.
What are protons, neutrons, and electrons.
Neutrons are _______________ charged.
How many electrons can the first three energy levels contain all together?
What is 28. (2 in level 1, 8 in level 2, 18 in level 3)
This is the smallest part of an element.
What is an atom.
What particle did J.J. Thomson discover?
What is : An electron
Located outside the nucleus and are negatively charged.
What are: electrons.
Electrons are ____________ charged and contain most of the _____________ of the atom.
What is negatively, volume
The sum of protons and neutrons in the nucleus of an atom.
What is mass number or atomic number.
When the number protons and electrons are equal the atom is _______________.
What is neutral.
This Danish physicist proposed an atomic model that showed electrons moving in specific layers. He also stated that atoms absorb or give off energy when electrons move from one level to another.
Who is Bohr.
Make up the nucleus and contain the most volume of an atom.
What are protons and neutrons.
The current atomic theory includes the ________ model of electrons.
What is Electron Cloud.
The number of protons in an atom of a certain element.
What is the atomic number.
Scientists use this to describe how electrons move around the nucleus.
What is the electron cloud model?
The raisins scattered throughout Thompsons model represents what subatomic particle?
What are: Electrons
Atoms of different elements have different numbers of these.
What are protons.
Trends of the characteristics of elements across the periodic table.
What are periods.
How many protons, neutrons, and electrons are there in an atom of the element Carbon (C)?
What are 6 protons, 6 neutrons, and 6 electrons.
Mass number - atomic number = ______ __ ________.
What is the numer of neutrons?
This British chemist concluded that each element is made of atoms that are all alike. The model associated with this scientist was proposed to be a tiny solid ball.
Who is: Dalton
An atom with the same number of protons but different number of neutrons.
What is an isotope.
The ______________ is the sum of the number of protons and neutrons in an atom of a particular isotope.
What is mass number or atomic mass.
How many protons, neutrons, and electrons are in the atom of the element Scandium (Sc)?
What are 21 protons, 24 neutrons, and 21 electrons.
Electrons nearest to the nucleus have ___________ energy than the electrons farthest from the nucleus.