Protons, Neutrons, and Electrons, Identify Atomic Structures
Atomic number
Number of protons and electrons in an atom
Electron
Part of the atom with a negative charge
Proton
Part of the atom with a positive charge
The atomic number of an element is the total number of which particles in the nucleus?
Protons
Mass Number
Total number of protons and neutrons
Average Atomic Number
Weighted average of isotopes of each element
Atomic Mass
What does the letter Z represent?
Helium
What element does this model represent?
Neon
What element has 10 neutrons?
Scandium
What element has 24 neutrons?
Gallium
What element has 39 neutrons?
Barium
What element has 81 neutrons?
Radon
What element has 86 Electrons?
Radium
What element has 88 protons?
1 AMU
What is the mass of a proton?
Mass of almost 0
What is the mass of an electron?
26
What is the number of protons in this atom?
Protons + Neutrons
What makes up the nucleus of an atom?
electron cloud
Where are the electrons located in the atom?
Above the element's symbol
Where do you find the atomic number?
Neutrons
Which of the parts of an atom have no charge?
proton, neutron, electron
parts of an atom
boron-11 isotope
protons = 5 neutrons = 6 electrons = 5
Neutral atoms contain equal numbers of
protons and electrons
Nucleus
the positively charged center of an atom
Vanadium atom
23 protons, 23 electrons, 28 neutrons
Iron atom
26 protons, 26 electrons, 30 neutrons
Selenium atom
34 protons, 34 electrons, 45 neutrons
Cesium atom
55 protons, 55 electrons, 78 neutrons
Carbon-14 has 8 neutrons. What is the atomic number of carbon-14?
6
Lead atom
82 protons, 82 electrons, 125 neutrons
Fluorine Atom
9 protons, 9 electrons, 10 neutrons
Neutron
A subatomic particle that has NO charge and is found in the nucleus of an atom
Electron
A subatomic particle that has a negative charge
Proton
A subatomic particle that has a positive charge and that is found in the nucleus of an atom
Isotope
Atoms of the same element that have different numbers of neutrons
Atom
Building blocks of matter
Carbon, Oxygen, Hydrogen, Nitrogen
Examples of elements
The atomic number
How can you tell the number of protons in an element?
Atomic Mass - # of Protons
How do you find the number of neutrons in a neutral atom?
11
How many electrons does Sodium (Na) have?
2
How many neutrons does Helium element have?
4
How many neutrons does Lithium have?
4
How many neutrons does this element have?
20
How many protons does Calcium (Ca) have?
29
How many protons does copper (Cu) have?
Atom
Makes up all matter, made up of protons, neutrons, and electrons
