Chemistry Quiz

A chemical reaction that involves a gain/loss of electrons is called:

• Double Replacement

• Neutralization

• Oxidation-Reduction

• Hydrolysis

How many valence electrons does carbon have?

• 4

• 5

• 6

• 7

What are valence electrons?

• Number of electrons in the outer most energy level

• Number of electrons gained or lost

• Number of electrons in the inner energy level

• Number of electrons

Which of the following is the correct electron dot structure for nitrogen?

• a

• b

• c

• d

What are oxidation numbers?

• Number of electrons in the outer most energy level

• Number of protons

• Electrons gained or lost in chemical bonding

The oxidation numbers in diatomic molecules are ___.

• 0

• 1

• -1

• depends on the compound

What is electronegativity?

• The repulsion of electrons

• the oxidation number

• How hard an atom can pull an electron

If in a reaction, copper is reduced; its number of electrons has:

• Increased

• Decreased

• Remained Constant

• Varies Randomly

If an atom loses electrons during a chemical reaction, the atom was:

• Reduced

• Neutralized

• Precipitated

• Oxidized

Which of the following compounds is NOT an ionic compound?

• NaCl

• N3P5

• Fe2O3

• NaBr