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Atomic Models, Mixtures and Compounds

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Horizontales
These occur when two or more elements combine to form a new substance. These often have new properties.
The area around an atom in that scientists know electrons are likely to be.
The types of changes that form compounds.
Two or more kinds of matter that are physically combined.
This model of an atom works for atomic numbers 1-20 and uses energy levels to place electrons.
Used in Bohr's model. These 4 levels place electron orbits and help us understand the excited and ground states.
This can be defined as any element or compound.
The normal state that electrons in an atom find themselves.
The latest model of an atom. Scientists know they can only estimate where electron orbits are.
Verticales
A wave or particle of light emitted when electrons lose energy.
The types of bonds that hold compounds and molecules together.
The state of electrons when extra energy is added.
The smallest amount of a substance that maintains all the properties of that substance.