Atoms and Periodic Table

__________ are the smallest unit of an element that maintains the properties of the element.

• Particles

• Atoms

• Protons

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A nucleus of an atom contains what two parts?

• Electrons and Protons

• Neutrons and Electrons

• Protons and Neutrons

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Electron in the outermost energy level are called?

• Valence Electron

• Valence Proton

• Valence Neutron

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The majority of the elements in the periodic table are

• Non-Metals

• Metals

• Metalloids

Tags

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Elements in the same _________ have the same number of valence electrons.

• Period

• Group

Tags

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Nonmetals that conduct electricity, but not well and are also known as metalloids are called___________

• Semiconductors

• Metals

• Metalloids

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The atomic number of an element is the number of _______ it has.

• protons

• neutrons

• electrons

• protons and neutrons

Tags

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The mass number of an element is the amount of _________ it has.

• protons

• protons and neutrons

• electrons

• neutrons

Tags

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Which term describes Neon?

• metal

• metalloid

• transition metal

• nonmetal

The periodic table is organized into columns called _______ and rows called ______.

• groups and periods

• periods and groups

• categories and periods

• categories and groups

Tags

NGSS.HS-PS1-1