Predicting reaction Products re test

What is the correct way of representing hydrogen gas alone, in a reaction?

• 2H

• H

• H₂

What does precipitate mean?

• forms a solid

• forms a liquid

• dissolved in water

• produces a gas

The symbol for a substance dissolved in water is ______

• (s)

• (l)

• (aq)

• (g)

In writing the chemical equation for a precipitation reaction, what abbreviation of the physical state must appear with one of the products?

• (s)

• (g)

• (l)

• (w)

Use your solubility rules to determine if soluble or insoluble:

AgBr

• Soluble

• Insoluble

Predict the products of this synthesis reaction: H₂O+ CaO→

• Ca(H₂O₂)₂

• H₂CaO₂

• Ca(OH)₂

• CaH₂O₂

Fill in the blank. (Zinc has a charge of +2)

Zn+ Hg(NO₃)₂--> Hg + _____

• Zn(NO₃)₂

• ZnNO₃

• ZnAg

• no reaction

Predict the product of this synthesis reaction:

Ca + N₂ →

• CaN

• CaN₂

• Ca₂N3

• Ca₃N₂

What is the product when Calcium and oxygen gas react?

• CaO₂

• Ca₂O

• CaO

• Ca₂O₂

Will this single displacement reaction take place: Zn + NaOH →

• no

• yes