Chemical Equation Test

Front

What is a synthesis reaction?

Back

A synthesis reaction is a reaction of at least two substances that forms a new, more complex compound.

Front

What is a decomposition reaction?

Back

A decomposition reaction is a reaction in which one compound breaks into at least two products.

Front

How can you determine if a chemical equation is balanced?

Back

A chemical equation is balanced if the number of atoms of each element is the same on both sides of the equation.

Front

How do you balance the equation: 2KI + ____Cl2 → 2KCl + I2?

Back

You fill in the blank with 1 to balance the equation.

Front

What is the balanced form of the equation: _Al + _HCl → _H2 + _AlCl3?

Back

The balanced form is 2Al + 6HCl → 3H2 + 2AlCl3.

Front

What is the definition of a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products.

Front

What does it mean for a reaction to be exothermic?

Back

An exothermic reaction is one that releases energy to the surroundings, usually in the form of heat.

Front

What is an endothermic reaction?

Back

An endothermic reaction is one that absorbs energy from the surroundings, usually in the form of heat.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.