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Compounds, Chemical Formulas, and Covalent Bonds

Last updated over 7 years ago

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How does an atom (other than helium) with less than 8 valence electrons become stable?

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Question 15

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Why is water polar?

Made up of 2 or more different elements.

Molecule

Compound

Chemical

Mixture

A group of atoms held together by covalent bonding that acts as an independent unit.

Molecule

Compound

Mixture

Chemical

Categorize the items below.

H2

H2O

N2

NaCl

Compound

Molecule

A chemical bond formed when two atoms share one or more pairs of valence electrons.

Isotope bond

Ionic bond

Common bond

Covalent bond

Which one has the stronger bond?

Oxygen

Nitrogen

How many atoms make up this compound?

24

6

6

12

How many valence electrons are shared in each covalent bond?

2

3

4

1

What kind of chemical bonding is taking place with Bromide?

Single bond

Quadruple bond

Triple bond

Double bond

A molecule that has a partial positive end and a partial negative end because of unequal sharing of electrons.

Nonpolar

Chemical equation

Polar

Compound

Polar molecule dissolves into a _________________ molecule.

polar

chemical

nonpolar

tripolar

A group of chemical symbols and numbers that represent the elements and the number of atoms of each element that make up a compound

Structural formula

Dot diagram

Chemical equation

Chemical formula

How many atoms of oxygen are there in  H₂O₂ 

3

4

2

1

How many atoms of hydrogen are there in  HCOOH₂ ?

3

1

2

5