Review unit 5,6,7,8

Which elements have the most similar chemical properties?

• Ge, As, and Sb

• Mn, Fe, and Co

• S, Se, and Te

• P, S, and Cl

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Which atom has the lowest electronegativity?

• Nitrogen

• Oxygen

• Fluorine

• Neon

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NGSS.HS-PS1-1

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Which statement accurately describes particles of an ideal gas, according to the kinetic molecular theory?

• The distance between the gas particles is much greater than the size of the particles

• As the gas particles collide, the total energy of the system increases

• The gas particles have strong intermolecular forces

• The gas particles move in a circular motion

As the elements in Group 2 in the periodic table are considered in order of increasing atomic number, there is a general increase in

• stability

• atomic radius

• electronegativity

• first ionization energy

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NGSS.HS-PS1-1

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Under which conditions does a gas behave least like an ideal gas?

• high temperature and low pressure

• high temperature and high pressure

• low temperature and low pressure

• low temperature and high pressure

Compared to the atoms of nonmetals in Period 3, the atoms of metals in Period 3 have

• fewer electron shells

• more electron shells

• more valence electrons

• fewer valence electrons

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NGSS.HS-PS1-1

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Which list of elements contains a metal, a metalloid and a nonmetal?

• Ag, Si, I₂

• Ge, As, Ne

• K, Cu, Br₂

• S, Cl₂, Ar

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NGSS.HS-PS1-1

At STP, O₂(g) and O₃(g) are two forms of the same element that have

• the same molecular structure and the same properties

• the same molecular structure and the different properties

• different molecular structure and the same properties

• different molecular structure and different properties

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NGSS.HS-PS1-3

Which Group 15 element exists as diatomic molecules at STP?

• phosphorus

• nitrogen

• bismuth

• arsenic

The carbon atoms in graphite and the carbon atoms in diamond have different

• atomic numbers

• atomic masses

• electronegativities

• structural arrangements

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NGSS.HS-PS1-3