Atoms, isotopes and ions Review

What is an atom?

• The guy down the street.

• Smallest possible unit into which matter can be divided, while still maintaining its properties.

• Biggest possible unit that cannot be divided

What is Matter?

• How you feel about someone.

• The smallest unit found on Earth

• Anything that has mass and takes up space (volume)

Positively charged particles

• Proton

• Electron

• Neutron

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What is the atomic number?

• Number of protons in an element; identifies the element

• Number of electrons and neutrons in an element.

• Where you find the elements.

What is the Periodic Table of Elements?

• Where all elements are listed according to qualities and the Atomic Number.

• A table that Aristotle ate at with Einstein.

• Where elements are listed alphabetically.

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What are Neutrons?

• Contribute to the atomic mass

• Help make up the nucleus of the atom.

• Neutral particles; have no electric charge.

• All of the above

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What are electrons?

• Positively charged particles

• Negatively charged particles

• Particles that charge you

What are Valence Electrons?

• Electrons in the inner energy level

• Electrons in the outer energy level

• Electrons that validate the nucleus

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The mass number is when you add what?

• Protons

• Neutrons

• Electrons

What are isotopes?

• Atoms that have the same number of everything

• Atoms that have the same number of protons, but have different numbers of neutrons

• Atoms that have the same number of electrons.

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