Exploring the Five Categories of Chemical Reactions

What is the general formula for a synthesis reaction?

• A + BC yields AC + B

• AB yields A + B

• AB + CD yields AD + CB

• A + B yields AB

What happens in a synthesis reaction?

• Two elements swap places

• A compound breaks down

• Two or more substances combine to form a single product

• A gas is always produced

What accelerates the decomposition of hydrogen peroxide?

• Heat

• Catalyst

• Pressure

• Water

What are the products of a combustion reaction with an organic compound?

• CH4 and O2

• C2H5OH

• CO and H2

• CO2 and H2O

What triggers the combustion of methane in the demonstration?

• Catalyst

• Heat

• Water

• Pressure

Which metal is used to replace silver in a silver nitrate solution?

• Zinc

• Gold

• Iron

• Copper

What is the purpose of thermite reactions in railway maintenance?

• To electrify the tracks

• To fill gaps between tracks

• To paint the tracks

• To clean the tracks

What is a common product of a double replacement reaction?

• Electricity

• Gas, water, or precipitate

• Metal

• Acid

What is the result of adding potassium iodide to lead(II) nitrate?

• Potassium nitrate explodes

• Potassium iodide evaporates

• Lead(II) nitrate dissolves

• Lead(II) iodide precipitates

How do antacids relieve heartburn?

• By decreasing food digestion

• By cooling the stomach

• By increasing stomach acid

• By neutralizing stomach acid