Unit 4 - Bonding Review

When two atoms combine to form a molecule, energy is

• always absorbed

• always released

• sometimes absorbed and sometimes

  released

• never absorbed or released

Tags

NGSS.HS-PS1-4

Which particles may be gained, lost or shared by an atom when it forms in a chemical bond?

• protons

• electrons

• neutrons

• nucleons

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NGSS.HS-PS1-1

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Which element would most likely form an ionic bond with chlorine?

• Oxygen (O)

• Nitrogen (N)

• Sulfur (S)

• Potassium (K)

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NGSS.HS-PS1-1

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In which compound have electrons been transferred to the oxygen atoms?

• CO₂

• NO₂

• H₂O

• Na₂O

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NGSS.HS-PS1-1

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Which type of bonding is characteristic of a substance that has a HIGH melting point and electrical

conductivity only in the LIQUID phase?

• nonpolar covalent

• coordinate covalent

• ionic

• metallic

Which pair of atoms will share electrons when a bond is formed between them?

• Ba and I

• Br and Cl

• K and Cl

• Li and I

Tags

NGSS.HS-PS1-1

Which formula represents a molecular substance?

• CO

• CaO

• Li₂O

• Al₂O₃

Tags

NGSS.MS-PS1-1

Which type of substance is soft, has a LOW melting point, and is a POOR conductor of heat and electricity?

• network solid

• metallic solid

• molecular solid

• ionic solid

What is the chemical formula for copper (II) chlorate?

• Cu₂Cl

• CuCl₂

• Cu₂ClO₃

• Cu(ClO₃)₂

Tags

NGSS.HS-PS1-2

Which formula is correct for ammonium sulfate?

• NH₄SO₄

• (NH₄)₂SO₄

• NH₄(SO₄)₂

• (NH₄)₂(SO₄)₂