The Periodic Table and Atomic Structure

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

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Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

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Value representing the number of protons in an element

• Atomic Mass
• Mass Number
• Valence Electrons
• Atomic Number

Subatomic particles that are neutral in charge

• Neutrons
• Protons
• Nucleus 
• Electrons

Where electrons are likely to be found as they travel around the nucleus

• Nucleus
• Electron Cloud
• Within a Proton
• Within a Neutron

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

• Electron Shells
• Orbitals
• Electron Cloud
• Nucleus

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Arrangement of elements organized by atomic number

• Electron Cloud 
• Periodic Table 
• Electron Configuration
• None of these

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A horizontal row of elements in the periodic table

• Molecule

• Period

• Family

• Atom

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What is the atomic number?

• 35

• 18

• 17

• 52

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How many neutrons does calcium have?

• 20

• 40

• 60

• 0

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