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Laabri

Compounds, Chemical Formulas, and Covalent Bonds

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Last updated almost 8 years ago
15 Nsɛmmisa
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1.

Made up of 2 or more different elements.

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2.

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

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3.

Categorize the items below.

  • H2

  • H2O

  • N2

  • NaCl

  • Compound

  • Molecule

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4.

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

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5.

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

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6.

Which one has the stronger bond?

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7.

How many atoms make up this compound?

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8.

How many valence electrons are shared in each covalent bond?

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9.

What kind of chemical bonding is taking place with Bromide?

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10.

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

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11.

Polar molecule dissolves into a _________________ molecule.

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12.

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

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13.

How many atoms of oxygen are there in H₂O₂

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14.

How many atoms of hydrogen are there in HCOOH₂ ?

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15.

Why is water polar?