Chemistry Final Exam Review 2024

During a chemistry class, Zoe is asked to identify which Lewis electron-dot diagram represents a nitrogen atom in the ground state. Which diagram should she choose?

• [Diagram A]

• [Diagram B]

• [Diagram C]

• [Diagram D]

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NGSS.HS-PS1-1

Harper is conducting an experiment in her chemistry class. She needs to identify which compound has covalent bonds. Can you help her?

• A. H₂O

• B. Li₂O

• C. Na₂O

• D. K₂O

Tags

NGSS.HS-PS1-1

During a chemistry class, Henry asked which element has 2 electrons in the outermost energy level. Can you help him?

• A. cesium (Cs)

• B. magnesium (Mg)

• C. boron (B)

• D. argon (Ar)

Tags

NGSS.HS-PS1-1

Oliver and Benjamin are discussing atoms in their science class. Oliver asks, 'What will happen when the number of protons changes in an atom?'

• A. Energy will be destroyed.

• B. Chemical bonding will occur.

• C. A new element will form.

• D. The atom will gain a charge.

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NGSS.HS-PS1-8

In a chemistry class, Anika and Evelyn are learning about ionic bonds. Sodium (Na) forms an ionic bond with Fluorine (F) to produce sodium fluoride (NaF). Which of these elements would bond similarly with sodium?

• potassium (K)

• magnesium (Mg)

• oxygen (O)

• chlorine (Cl)

During a chemistry class, Aiden and Charlotte were discussing the IUPAC name for the compound with a chemical formula B6Si. What is the correct name?

• hexasilicide boron

• boron heptasilicide

• hexaboron monosilicide

• boron heptasilicon

During a science class, Abigail and Sophia were discussing the periodic table. Abigail mentioned that going from left to right in the periodic table, the atomic radius decreases. Which of the following explains the atomic radii trend of elements across a period?

• There is an increase in the number of electron shells.

• There is a decrease in the number of electron shells.

• The attraction increases between the nucleus and the outer electrons.

• The attraction decreases between the nucleus and the outer electrons.

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Noah and Evelyn are conducting an experiment in their chemistry class. They observe that electronegativity values for elements in Group 1 are much lower than the values for elements in Group 17. What type of bond forms if an element from Group 1 bonds with an element from Group 17?

• ionic bond

• hydrogen bond

• polar covalent bond

• nonpolar covalent bond

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Liam and Sophia observed the arrangement of atoms of a substance changing during a phase change as modeled below. Which of the following statements explains the change shown?

• The substance changed from a solid to a liquid by gaining energy.

• The substance changed from a liquid to a solid by gaining energy.

• The substance changed from a solid to a liquid by losing energy.

• The substance changed from a liquid to a solid by losing energy.

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NGSS.HS-PS3-4

Anika is studying the periodic table and learns that nitrogen has five valence electrons. For this reason, it often bonds to gain three electrons. Based on the arrangement of the elements in the periodic table, which other element most likely shows similar behavior?

• neon

• carbon

• oxygen

• phosphorus

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NGSS.HS-PS1-1

NGSS.HS-PS1-2