Chemical Reactions - HCMS IPC Review

Chemical Reactions

100

The number of oxygen atoms in these reactants:

2Pb₃(PO₄)₄ + NH₄NO₃

What is 35 atoms of oxygen?

200

energy + water -> hydrogen + oxygen

... is an example of this type of reaction.

What is an example of a decomposition reaction?

300

The name of the substance HBr.

What is hydrobromic acid?

400

When balancing an equation, these numbers can not be changed.

What is a subscript?

500

Balance this equation:

__CaCl₂ + __Na₃PO₄ ->  __Ca₃(PO₄)₂ + __ NaCl

What is 

3CaCl₂ + 2Na₃PO₄ ->  Ca₃(PO₄)₂ + 6NaCl

Chemical Reactions II

100

In the formula 5CaSO₄, this is the number of oxygen atoms.

What is 20?

200

DOUBLE JEOPARDY!!!!!!!!!!

A + B -> AB

What is a synthesis reaction?

300

Balance the following chemical reaction:

C₅H₁₂ + O₂ ->   CO₂ +  H₂O

C₅H₁₂ + 8 O₂ ->  5 CO₂ +  6 H₂O

400

DOUBLE JEOPARDY!!!!!!!!!!!!!

To balance a chemical equation, these are the only things that you can adjust.

the coefficient

500

ammonia + hydrogen chloride -> ammonium chloride 

... is an example of this type of reaction.

What is a synthesis reaction?

Chemical Reactions III

100

The number of molecules in the substance 3B₂H₂.

What is 3?

200

This type of reaction occurs when an element displaces another element in a compound, producing a new compound and a new element.

What is a single displacement reaction?

300

DOUBLE JEOPARDY!!!!!!!!!

An expression in which symbols and formulas are used to represent a chemical reaction.

What is a chemical equation?

400

An increase in temperature will usually cause the rate of reaction to ________________.

What is increase?

500

A reaction type in which two reactants become one product.

What is a Synthesis or Combination Reaction?

Chemical Reactions IV

100

A metal and non-metal form this type of compound.

What is an ionic compound?

200

DOUBLE JEOPARDY!!!!!!!!!!!!!

A type of reaction in which compounds break down into simpler substances, often times more products than reactants.

What is a decomposition reaction?

300

This must occur in a combustion reaction.

The products are CO₂ and H₂O

400

The reaction 2HgO ---> 2Hg + O is an example of this type of reaction.

What is decomposition?

500

Balance the reaction: Na + H₂O --> NaOH + H₂

What is 2Na + 2H₂O --> 2NaOH + H₂

Chemical Reactions V

100

This was an element that gained electrons and now has a negative charge.

What is an anion?

200

The amount of barium sulfate created in the reaction show:

Na₂(SO₄) + BaCl₂ --> Ba(SO₄) + 2NaCl

(11g)          (17g)          (?)         (19g)

What is 9 grams?

300

An ACID is a substance that when added to water increases the concentration of ___ ions present.

What is H+?

400

AgNO_3(aq) + NaCl_(aq) -> AgCl_(s) + NaNO_3(aq)

is an example of this type of reaction.

What is an example of a double displacement reaction?

500

The type of reaction shown below:

Mg(OH)₂ + H₂SO₄ --> MgSO₄ + 2H₂O

What is a double displacement reaction?