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Mixtures VS. Substances
Electrons
Atomic Structure
Atomic Structure Continued
Periodic Table
100
If a substance can be separated by ____________ means, then it is a mixture.
What is physical
100
The outer shells of electrons is know as.
What is valence electrons?
100
The central part of an atom is known as the ___________
What is the nucleus?
100
Makes up the mass of an atom
What are the protons and neutrons?
100
The rows going across the periodic table are known as _____________
What are periods?
200
T/F Homogenous mixtures look uniform throughout
True
200
The first energy level of electrons can hold ___ electrons.
What is 2
200
The three parts of an atom are ____________, _____________, and ____________
What are protons, electrons, and neutrons?
200
An isotope of an atom has a different number of ___________
What are neutrons?
200
The columns going up and down on the periodic table are known as.
What are groups or families?
300
Colloids are __________ mixtures
What are heterogeneous mixtures.
300
Lewis dot diagrams only show ___________ electrons
What are valence electrons?
300
The charge an electron has.
What is negative?
300
The mass of an electron is too small.
Why is an electron not included in the mass of an atom?
300
One ________ and __________ are added to each element as you go across a period on the periodic table
What is one electron and one proton.
400
Suspensions are ___________ mixtures
What are heterogeneous mixtures
400
The outer most shell on a Bohr diagram has ______ electrons.
Has 8 electrons.
400
The charge a proton has.
What is positive?
400
These particles of an atom are located in the nucleus of an atom.
What are protons and neutrons?
400
Metals are ___________ conductors of electricity and heat.
What is good?
500
Solutions are _________________ mixtures
What are homogeneous mixtures
500
In order for most atoms to be the most stable they need ____ electrons on their valence shell.
What is 8 electrons?
500
The charge a neutron has
What is neutral?
500
This particle is located in orbitals around the nucleus.
What are electrons?
500
These are added to elements as you move down a family or group on the periodic table
What are electron shells?