Rates of Reaction CW7

How does temperature affect the rate of a chemical reaction?

• Temperature has no effect on the rate of reaction
• Higher temperature leads to a faster reaction
• Temperature affects the pressure of the reaction mixture
• Lower temperature leads to a faster reaction

How can carbon dioxide be produced during a chemical reaction and tested?

• By mixing vinegar and baking soda
• By burning a piece of wood
• By boiling water
• By combining hydrogen gas and oxygen gas

What is the main difference between a chemical reaction and a biochemical reaction?

• Chemical reactions occur in living organisms, while biochemical reactions occur outside of living organisms
• Chemical reactions involve the breaking and forming of chemical bonds, while biochemical reactions involve the transfer of energy
• Chemical reactions involve the conversion of one substance into another, while biochemical reactions involve the conversion of energy into chemical bonds
• Chemical reactions involve only inorganic compounds, while biochemical reactions involve only organic compounds

Which of the following is an example of a common biochemical reaction?

• Combustion of wood in a fire
• Burning of gasoline in a car engine
• Rusting of iron
• Digestion of food in the stomach

How does a catalyst affect the rate of a chemical reaction?

• It lowers the activation energy of the reaction
• It increases the concentration of reactants
• It decreases the temperature of the reaction
• It provides energy for the reaction to occur

How can oxygen gas be produced during a chemical reaction?

• By combining hydrogen gas and oxygen gas
• By burning a piece of wood
• By boiling water
• By mixing vinegar and baking soda

How does particle size affect the rate of a chemical reaction?

• Smaller particles react faster than larger particles
• Particle size affects the temperature of the reaction
• Particle size has no effect on the rate of reaction
• Larger particles react faster than smaller particles

What is the definition of a chemical reaction?

• A process that changes the physical properties of a substance
• A process that changes the temperature of a substance
• A process that changes the chemical properties of a substance
• A process that changes the state of matter

How can carbon dioxide be produced during a chemical reaction?

• By mixing vinegar and baking soda
• By combining hydrogen gas and oxygen gas
• By burning a piece of wood
• By boiling water

How does concentration affect the rate of a chemical reaction?

• Lower concentration of reactants leads to a faster reaction
• Concentration affects the color of the reaction mixture
• Concentration has no effect on the rate of reaction
• Higher concentration of reactants leads to a faster reaction