How do covalent bonds form?

When atoms share at least one pair of electrons

When atoms transfer electrons to another

When atoms let electrons freely move throughout the substance

When atoms share at least two pairs of electrons

Why is the boiling point of water higher than the boiling point of chlorine gas, Cl2?

Water is a polar molecule, and chlorine gas is nonpolar. Water is will have stronger attractions between its molecules than chlorine gas.

Water is a nonpolar molecule, and chlorine gas is polar. Water is will have stronger attractions between its molecules than chlorine gas.

Water is a polar molecule, and chlorine gas is nonpolar. Water is will have weaker attractions between its molecules than chlorine gas.

Water is a nonpolar molecule, and chlorine gas is polar. Water is will have weaker attractions between its molecules than chlorine gas.

What happens to the charge on atoms when they form a polar covalent bond?

The atom that has a greater attraction for electrons will get a partial negative charge.

The atom that has a greater attraction for electrons will get a full negative charge.

The atom that has a greater attraction for electrons will get a full positive charge.

The atom that has a greater attraction for electrons will a partial positive charge.

No charges are produced; charges are produced on nonpolar covalent bonds.

What does the formula of an ionic compound describe?

The ratio of ions in the compound.

The ratio of neutrally charged atoms in the compound.

The ratio of electrons in the compound.

The ratio of electric charges in the compound.

What do the name and formula of a molecular compound describe?

The type and number of atoms in a molecule of the compound.

The type and number of ions in a molecule of the compound.

The type of number of atoms in a crystal of the compound.

The type and number of ions in a crystal of the compound.

What holds metal ions in a metal lattice?

Strong bonds between metal cations and the surrounding valence electrons

Strong bonds between the metal anions and the surrounding valence electrons

Strong bonds between the metal cations and the surrounding valence protons

Strong bonds between the metal anions and the surrounding valence protons

Why are metal good conductors of electric current?

The valence electrons are able to move freely since they aren't attached to any particular metal ion.

The metal ions will move towards the negative charges and the electrons will move towards the positive charges.

They offer a low amount of electrical resistance compared to nonmetals, allowing current to flow freely.

Which element has a higher melting point: potassium or calcium? Why?

Calcium because calcium is able to contribute twice as many electrons, compared to potassium, to the metallic bonds.

Potassium because potassium is able to contribute half as many electrons, compared to calcium, to metallic bonds.

Potassium because potassium is able to contribute twice as many electrons, compared to calcium, to metallic bonds.

Calcium because calcium is able to contribute half as many electrons, compared to potassium, to the metallic bonds.

Unit 6 Structure of Matter/Bonding Review

Authored by WILLIAM KUSSMAUL

Science

9th - 12th Grade

NGSS covered

Used 8+ times

Unit 6 Structure of Matter/Bonding Review

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30 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

When an atom loses an electron it forms a(n)

anion.

cation.

polyatomic ion.

neutral ion.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The charge on a chloride ion in AlCl3 is

Tags

NGSS.HS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which pair has the same electron configuration?

Cl- and Ar

Cl- and Ar-

Cl and Ar

Cl+ and Ar

Tags

NGSS.HS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A chemical bond that forms when atoms share electrons is always a(n)

polar bond.

ionic bond.

metallic bond.

covalent bond.

Tags

NGSS.HS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When two fluorine atoms share a pair of electrons, the bond that forms is a(n)

polar covalent bond.

ionic bond.

nonpolar covalent bond.

double bond.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The attraction among water molecules is stronger than the attraction among

sodium and chloride ions.

carbon dioxide molecules.

the atoms in a polyatomic ion.

atoms in a diatomic molecule.

Tags

NGSS.HS-PS1-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When is an atom least likely to react?

When the lowest occupied energy level has no electrons

When the highest occupied energy level has no electrons

When the lowest occupied energy level is filled with electrons

When the highest occupied energy level is filled with electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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Unit 6 Structure of Matter/Bonding Review

When an atom loses an electron it forms a(n)

The charge on a chloride ion in AlCl3 is

Which pair has the same electron configuration?

A chemical bond that forms when atoms share electrons is always a(n)

When two fluorine atoms share a pair of electrons, the bond that forms is a(n)

The attraction among water molecules is stronger than the attraction among

When is an atom least likely to react?

How many dots should indium have for its electron dot diagram?

Which of the following is not an ionic compound?

What will the ratio of ions be in any compound formed from metals in Group 2 and nonmetals in Group 17? Answers are in the format of Group 2 ions : Group 17 ions

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