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Chemistry

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Edward Sporer

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Cards in this guide (13)
Name the following binary compound K2Cr2O7

Potassium Dichromate

What is molarity pure water

the molarity of water is 55.5.

Does H2 have a molecular dipole moments

No. H2 does not have a permanent dipole moment.

How is the name of the second element in a covalent molecule changed

The ending of the second element is changed to -ide

How does one determine the number of core electrons an atom has

subtract the group number from the atomic number

What best describes a bond formed between two unlike atoms

The type of bond is determined by the difference in electrongativity of atoms

What shape does the molecule ClF2 plus have

The ClF2+ ion is bent. (The VSEPR AXE notation is AX2E2 ). The ClF2- ion (AX2E3) is linear.

Which 2 atoms form a covalent bond

If the electronegativity difference between two atoms is below 1.7, then the two atoms form covalent bond.

What is the best definition of a physical change

Answer this question… Which of the following is the best definition of a physical change?

Which electrons in an atom have the highest energy level

The valence electrons.

What is the correct electron configuration for an element with 5 electrons in the 3d energy sublevel

1s22s22p63s23p64s23d5

When would dipole dipole be significant

Dipole-dipole forces play a significant role when a molecule is polar.

When food is exposed to air it can lose electrons this loss of electrons creates reactive molecules that work to destroy the chemical bonds in the food causing it to spoil what are these molecules cal

Free radicals

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