Chemical Bonding and Reactions

Which of these is the correct formula for dihydrogen monoxide?

• H₄O

• H₂O

• H₂O₂

• H₃O₂

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-1

Which of these slows down a chemical reaction?

• reactant

• inhibitor

• equilibrium

• catalyst

How does fluorine (F) obey the octet rule when reacting to form compounds?

• It doesn’t change its number of electrons

• Fluorine does not obey the octet rule.

• It gains electrons.

• It gives up electrons.

Which of the following shows correctly an ion pair and the ionic compound the two ions form?

• Sn⁴⁺ and N^3- form Sn₄N₃

• Cu²⁺ and O²- form Cu₂O₂

• Cr³⁺ and I- form CrI

• Cr²⁺ and I^- form CrI₂

Tags

NGSS.MS-PS1-1

Which of the following can be categorized as a synthesis reaction?

• Ba + NaCl →BaCl₂ + Na

• KNO₃→K⁺ + NO₃^-

• 2Li + F₂ → 2LiF

• HCl + LiNO₃ → HNO₃ + LiCl

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of reaction is displayed below?
2Al + Fe₂O₃ → 2Fe + Al₂O₃

• Single Replacement

• Double Replacement

• Synthesis

• Combustion

Tags

NGSS.MS-PS1-2

What type of reaction is characterized by two compounds switching bonding partners?

• Single Replacement

• Combustion

• Synthesis

• Double Replacement

What is a double replacement?

• Two compounds react to form two new compounds.

• One compound reacts to form two separate elements.

• Two elements reacting to form a single compound.

• A hydrocarbon and 

What class of reaction best describes the equation below: 2HI --> H₂ + I₂

• synthesis

• decomposition

• single replacement

• double replacement

Which of the following pairs of elements is most likely to form an ionic compound?

• magnesium and fluorine

• manganese and iron

• oxygen and chlorine

• sodium and aluminum