CW7 Rates of reactions

Which of the following would increase the rate of a chemical reaction?

• Freezing the chemicals

• Increasing the temperature of the reagents

• Removing a catalyst

• Using less chemicals

Tags

NGSS.HS-PS1-5

Which of the following would increase the rate of a chemical reaction?

• Removing a catalyst

• Diluting the chemicals

• Decreasing the temperature

• Adding a catalyst

Tags

NGSS.HS-PS1-5

Which of the following would increase the rate of a chemical reaction?

• Lowering temperatrure

• Removing a catalyst

• Making the chemicals more concentrated

• Using less chemicals

Tags

NGSS.HS-PS1-5

Which colour on the graph would represent the solution with the higher temperature?

• Red

• Blue

• None

• Both

Tags

NGSS.HS-PS1-5

Which colour on the graph would represent the solution with a catalyst?

• Red

• Blue

• Both

• None

Which of the following would increase the rate of CO2 made using marble chips and HCl?

• Lowering the temperature

• Crushing the marble chips

• Using less acid

• Using bigger marble chips

Tags

NGSS.HS-PS1-5

Which of the following is not made when marble chips are mixed with HCl?

• CO2

• CaCl2

• H20

• O2

Which of the following lines represents the chemical with the lower concentration?

• Red

• Blue

• Both

• None

Tags

NGSS.HS-PS1-5

Which of the following colours represent the solution with the largest particle size?

• Red

• Blue

• Both

• None

What is produced after a reaction?

• Product(s)

• Reactant(s)

• Catalyst(s)

• Matter