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Covalent bond

Authored by Hossam Eltopgy

Chemistry

9th - 10th Grade

NGSS covered

Used 31+ times

Covalent bond
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16 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

1.What attractions hold two atoms in a molecule together?

attraction between ions with opposite charges

attraction between the nuclei of the atoms and shared electrons

attraction between each nucleus and the electrons of the other atom

attraction between the molecule and other molecules

Tags

NGSS.HS-PS1-4

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

2.What determines whether a molecule is polar?

a.type of atoms and shape of molecule

mass of atoms and number of valence electrons

type and mass of atoms

ionization energy and number of covalent bonds

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

3.Why does water have a much higher boiling point than methane?

a.Methane molecules are more polar, so its molecules have stronger attractive forces.

b.Partial charges on the polar water molecules increase attractive forces between molecules.

c.A water molecule has much more mass than a methane molecule, so water has a higher boiling point.

d.Water has a higher boiling point because its molecules do not contain carbon atoms.

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

is a chemical bond in which two atoms share a pair of valence electrons.

covalent bond

Ionic bond

Metalic bond

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When atoms form a polar covalent bond, the atom with the greater attraction for electrons has a partial positive charge. The other atom has a partial negative charge.

True

False

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

•A covalent bond in which electrons are shared equally is called a polar covalent bond.

True

False

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In a carbon dioxide (CO2) molecule, the polar bonds between the carbon atom and the oxygen atoms cancel out because the molecule is linear.

True

False

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