The substance that is formed in a chemical reaction is called the

Which of the following stores chemical energy?

Which of the following occurs in an endothermic reaction but not in an exothermic reaction?

A type of reaction that produces an increase in temperature is

An example of an endothermic reaction is

A reaction in which the products contain more chemical energy than the reactants is

Which of these represents the release of chemical energy?

Which of the following are the products and reactants of a chemical reaction most likely to have in common?

Which of the following occurs when gasoline is burned?

In a balanced chemical equation, the mass of the reactants is equal to the

What coefficient is missing in C₂H₄ + (?)O₂ → 2CO₂ + 2H₂O?

Which of the following represents the word equation magnesium + oxygen → magnesium oxide?

In the reaction 3CuCl₂ + 2Al → 2AlCl₃ + 3Cu, how many moles of Al react with 3 moles of CuCl₂?

In the electrolysis of water, 2H₂O → 2H₂ + O₂, if the volume of oxygen produced was 8 mL, what would be the volume of hydrogen produced?

If you use 3 mol of O₂ in the reaction 2Mg + O₂ → 2MgO, how many moles of Mg are needed?

Give the mole ratio for the following equation: Zn + 2HCl → ZnCl₂ + H₂.

In the reaction 2K + Cl₂ → 2KCl, how much potassium (K, 39.1 g/mol) is required to produce 298 g of KCl (Cl, 35.4 g/mol)?

In the reaction 2H₂O → 2H₂ + O₂, if you start with 4 mol of water, how many moles of hydrogen gas are formed?

Which of the following equations is not balanced?

At higher temperatures, food cooks faster because particles of food ____.

Catalysts that slow reactions are called ____.

A slow reaction is likely to occur when the reactants have ____ temperatures and ____ surface areas.

Which is not true of catalysts?

Raising the temperature of a system favors the reaction that ____.

Increasing the amount of one substance in an equilibrium reaction favors the reaction that ____.

Which is not true of enzymes?

When a chemical reaction and its reverse occur at the same time and rate, the reaction is said to be in ____.

According to Le Châtelier’s principle, opening a soda can produces bubbles because which of the following changes occurs in the bottle?

All of these are likely to speed up the rate of a reaction except ____.

In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question. 1. The decomposition of water can be brought about by

In an oxidation-reduction reaction,

Which of the following represents a double-displacement reaction between sodium chloride and silver fluoride?

Pieces of molecules that have one or more electrons available for bonding are

A synthesis reaction between magnesium (Mg) and oxygen (O₂) might produce

In the space provided, write the letter of the term or phrase that best matches each description. 6. CH₄ + 2O₂ → CO₂ + 2H₂O

In the space provided, write the letter of the term or phrase that best matches each description. 7. 2NH₃ → N₂ + 3H₂

In the space provided, write the letter of the term or phrase that best matches each description. 8. 2NaCl + H₂SO₄ → Na₂SO₄ + 2HCl

In the space provided, write the letter of the term or phrase that best matches each description. 9. Fe + S → FeS

In the space provided, write the letter of the term or phrase that best matches each description. 10. 2Li + 2H₂O → 2LiOH + H₂