GCSE Combined - Chemistry Paper 2

What changes will result in more bubbles?

(select all correct answers)

• Increase the concentration of acid

• Decrease the concentration of acid

• Increasing the temperature

• Decreasing the temperature

• Adding more magnesium

Match the following for investigating the effect of temperature on rate

• The time it takes for the cross to disappear

• Control Variable

• A solid is forming

• Independent Variable

• Different temperatures

• Cloudiness

• Same concentration of acid each time

• Dependent Variable

Increases the frequency of collisions (selects all that apply)

• Increasing temperature

• Adding a catalyst

• Increasing the concentration of reactants

• Increasing the surface area

• Decreasing the temperature

Increases the number of successful collisions (selects all that apply)

• Increasing temperature

• Adding a catalyst

• Increasing the concentration of reactants

• Increasing the surface area

• Decreasing the temperature

Tap the section where one of the reactants has been used up

Tap the section where the rate of reaction is fastest

Tap the condition that has the fastest rate of reaction

Reorder the following alkanes

• Methane

• Propane

• Ethane

• Butane

Match the following

• Propane

• 
• Ethane

• 
• Ethene

• 
• Butane

• 
• Methane

• 

Tap the location vaporised crude oil enters