Atomic Structure - 33 questions
Diagram Magnesium. To become stable, which electrons will it lose?
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Diagram lithium and sodium to show the concept from question #1
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How could boron become an ion
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Study the figures below and answer the questions A-C -
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True or False: The energy of an electron varies depending upon which energy level the electron occupies
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Which category of elements has some characteristics of metals and some of non metals
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the lowest energy level of an atom is filled. Its second level contains 5 electrons. What is it.
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How many protons does Neon have> Do any other elements have the same number of protons?
10 protons. No
How many protons does aluminum have? What is the atomic mass?
13 protons. 26.982 units of mass
Diagram chlorine. How many energy levels do you need? How many electrons on each energy level?
3 energy levels First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 7
Draw an atom of Boron. How many protons, neutrons and electrons does it have?
5 positive 6 negative
Define Isotope
Atoms with the same number of protons but different number of neutrons
What did Bohr figure out about elecrons?
Bohr discovered that the atom was a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus—like the solar system, but works with gravity - not energy.
Draw an Atom and label its 2 parts and 3 particals
Center & Nucleus and 3 parts:protons, neutrons and electrons
Name 2 things that are not made of matter
Energy is not matter. Lighting and magnatism are not made of matter.
how many electrons can travel on the 1st energy level. How many on the 2nd energy level?
First: 2 Second - 8
An Atom has 26 protons, 26 electrons and 30 neutrons. What is its number?
Its mass number is 56
Who said that Cathode Rays are made up of negatively charged particles
JJ Thomson in 1897
which scientist said that said the the different elements are made of different types of atoms?
John Dalton
Name the 3 main categories of elements. What type of element is there most of?
Metals, non-metals and transition metals. Non metal - hydrogen. Hydrogen make up 3/4 of all matter
where is the most of a mass located in an atom
The nucluous
Diagram Carbon-12 and Carbon-14. How are they different
They have a different number of neutrons
The electron cloud is large compared to the ______ of the atom
the nucluleus
Do positive and negative ions attract or repel each other?
they attract
how do you find the mass number of an element
add the number of proton and nuetrons
define negative ion
an atom with more electrons than protons, giving it a negative charge
Define positive ion
an electronically charged atom
All the elements in the first vertical column of the periodic table have the same number of _____ in their outermost energy level
electrons in their outer orbital or same charge
The atomic number is equal to the number of ___________
protons in the nuclues
What did rutherford think would happen in his Gold foil experiment?
rutherford thought that gold foil was a single layer of atoms
Which atomic particle travels on the energy levels
the electron
Which particle has the smallest mass
the electron
When an ion forms, the electron is released from which energy level?
the first
