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Biblioteka

Compounds, Chemical Formulas, and Covalent Bonds

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Posljednje ažuriranje over 7 years ago
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Pitanje 1
1.

Made up of 2 or more different elements.

Pitanje 2
2.

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

Pitanje 3
3.

Categorize the items below.

  • H2

  • H2O

  • N2

  • NaCl

  • Compound

  • Molecule

Pitanje 4
4.

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

Pitanje 5
5.

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

Pitanje 6
6.

Which one has the stronger bond?

Pitanje 7
7.

How many atoms make up this compound?

Pitanje 8
8.

How many valence electrons are shared in each covalent bond?

Pitanje 9
9.

What kind of chemical bonding is taking place with Bromide?

Pitanje 10
10.

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

Pitanje 11
11.

Polar molecule dissolves into a _________________ molecule.

Pitanje 12
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

Pitanje 13
13.

How many atoms of oxygen are there in H₂O₂

Pitanje 14
14.

How many atoms of hydrogen are there in HCOOH₂ ?

Pitanje 15
15.

Why is water polar?