Chemistry

What is an example for (aq) in a chemical reaction?

• water

• Tree

• ice

• fog

Substances that are the result of a chemical change is ................... .

• reactant

• reaction

• product

• H₂O

2 RbNO3 + BeF2 --> Be(NO3)2 + 2 RbF ?

• decomposition

• synthesis

• single displacement

• double displacement

____ and ____ combine to yield ____ and____.

• zinc chloride , Hydrogen ,zinc , hydrochloric acid

• zinc , hydrochloric acid , zinc chloride , Hydrogen

• hydrochloric acid , zinc chloride, Hydrogen, zinc

• zinc chloride , Hydrogen , hydrochloric acid , zinc

What is the Product of this reaction ?

• Mg₃N₂

• Mg₃N₃

• MgN

• Mg₂N₃

Balance the Equation .

___ N₂ + ___ F₂ --> ___ NF₃

• 1 , 3 , 1

• 1 , 3 , 3

• 1 , 3 , 2

• 2 , 3 , 2

The substances that is not used up completely in a reaction is called the _______?

• limiting reactant

• Excess reactant

• Percent yield

• unreactant

The percent yield is Equal to ______ .

Will there be a reaction or not?

Co(s) + 2NaCl(aq) --> _______

• Yes , There is reaction

• No Reaction

releasing a large amount of energy in the form of heat and light.

• Decomposition of metal carbonate

• Double-Replacement Reactions

• Single-Replacement Reaction

• Combustion Reaction