Reactions Test CP

Each substance to the right of the arrow in a chemical equation is a(n) _________.

• Catalyst

• Product

• Reactant

• Inhibitor

The numbers that go before symbols and formulas in a chemical equation are _________.

• Superscripts

• Subscripts

• Catalysts

• Coefficients

Substances that speed up chemical reactions are called _________.

• Inhibitors

• Products

• Reactants

• Catalysts

A(n) ________ chemical equation has the same number of atoms of each element on each side of the equation.

• unbalanced

• balanced

• simple

• complex

If something is burned, a ________ reaction has occurred.

• double displacement

• single displacement

• combustion

• synthesis

Why does an increase in temperature result in an increase in reaction rate?

• It raises the activation energy

• It causes the molecules to increase in size

• It decreases the concentration of reactants

• It causes the increase in the number of particle collisions

If energy must be added to a chemical reaction for the reaction to take place, the reaction is __________.

• exergonic

• exothermic

• endergonic

• endothermic

In a chemical equation, the symbol that means dissolved in water is _____

• (s)

• (l)

• (g)

• (aq)

What type of reaction is the following chemical reaction? CH3CH2OH + 3O2 → 2CO2 + 3H2O

• double-displacement

• single-displacement

• combustion

• synthesis

Which chemical reaction represents a double replacement reaction?

• 2Na + Cl2 → 2NaCl

• 2KClO3 → 2KCl + 3O2

• Zn + 2HCl → ZnCl2 + H2

• NaOH + HCl → NaCl + H2O