Chemistry Final Review Quiz

What is the balanced equation for sodium reacting with chlorine?

• Na + Cl -> NaCl

• NaCl + Cl₂ -> Na2Cl₂

• 2Na + 2Cl -> 2NaCl

• 2Na + Cl₂ -> 2NaCl

What happens to the atomic radius across a period in the periodic table?

• Same

• Fluctuates

• Decreases

• Increases

If 2 moles of H₂ react with 1 mole of O₂, how many moles of H₂O are produced?

• 1 mole

• 2 moles

• 3 moles

• 4 moles

What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-3 M?

• 10

• 3

• 5

• 7

What's the difference between an acid and a base?

• Acids release hydroxide ions in water

• Bases release hydrogen ions in water

• Acids release hydrogen ions (H+) in water, bases release hydroxide ions (OH-) in water.

• Acids release oxygen ions in water

The nucleus of an atom is ___.

• Has more protons than neutrons

• Negatively charged

• Composed of protons and neutrons

Subatomic particle with no charge

• Proton

• Nucleus

• Atom

• Electron

• Neutron

Which of the following elements is a nonmetal: Fe, Na, Pt, or Ar?

• Fe

• Na

• Pt

• Ar

How many protons are in the ion?

• 35

• 36

• 80

• 45

How many valence electrons are in the atom?

• 3

• 8

• 2

• 13