INORG LAB BALANCING PRELIM REVIEWER

What is a coefficient in a chemical equation?

• A whole number added before the elements

• The number of atoms in a molecule

• The product of a reaction

• The rate of reaction

What does a subscript indicate in a chemical formula?

• The number of atoms in an element of a molecule

• The concentration of reactants

• The number of molecules in a reaction

• The pressure of the reaction

What is a reactant?

• The temperature at which a reaction occurs

• A catalyst that speeds up the reaction

• The final product of a reaction

• The starting material in a chemical equation

What is a product in a chemical reaction?

• The catalyst used

• The form after the equation

• The pressure applied

• The starting material

What happens to the reaction rate with high concentration?

• It decreases

• It remains the same

• It increases

• It becomes zero

What is the effect of low pressure on reaction rate?

• It doubles the rate

• It increases the rate

• It decreases the rate

• It has no effect

Which of the following is NOT a factor affecting reaction rate?

• Concentration

• Temperature

• Surface area

• Color of reactants

What is the role of catalysts in a chemical reaction?

• To slow down the reaction

• To change the products

• To speed up the reaction

• To increase the pressure

What does stirring do to a reaction?

• Increases the reaction rate

• Decreases the temperature

• Reduces the concentration

• Has no effect

What is the definition of reaction rate?

• The speed at which products are formed

• The pressure applied

• The amount of reactants used

• The temperature of the reaction