Yr 10 Chemistry Revision

Which of these is NOT a method for measuring the rate of reaction?

• measure the change in amount of reactant A
• measure the change in amount of reactant B
• measure the amount of change in product
• measure the amount of change in the catalyst

Tags

NGSS.HS-PS1-5

Which of these will NOT speed up the rate of reaction between a strip of magnesium and hydrochloric acid?

• coil up the strip of magnesium
• cut up the strip of magnesium
• increase the concentration of the hydrocholoric acid
• increase the temperature of the hydrocholoric acid

Tags

NGSS.HS-PS1-5

Why does a higher temperature increase the rate of a reaction?

• it increases both the frequency and energy of particle collisions
• it only increases the frequency of particle collisions
• it only increases the energy of particle collisions
• it reduces the activation energy of the reaction

Tags

NGSS.HS-PS1-5

Why does breaking up a solid reactant increase the rate of reaction?

• it creates more solid
• it creates more energy
• it increases the surface area
• it increases the concentration

Tags

NGSS.HS-PS1-3

Which of these is NOT a benefit to using a catalyst?

• it increases the rate of reaction
• it increases the amount of product
• it can save time and money
• it can help reduce pollution

Rate of chemical reaction means

• amount of product formed
• speed of reaction
• concentration of reacting particles
• combining reactants with products

Tags

NGSS.HS-PS1-5

To show how surface area affects rate of reaction you will use one of the following methods.

• Add catalyst
• Increase the temperature
• Decrease the pressure of reactants
• Finely divide the reacting substances

One of the signs of a chemical reaction taking place is:

• Bubbles are produced in the reacting vessel
• Reactants are not combining
• Products are not forming
• Colour is not changing

Which factors increase the rate of a reaction.

• increasing temperature
• increasing concentration
• increasing surface area
• all of these

Tags

NGSS.HS-PS1-5

Increase in temperature of the reactants can do one of the following

• Slow collision frequency
• Allow less effective collision between the particles
• Neutralise the reaction
• increase collision between the particles thus increasing the rate.

Tags

NGSS.HS-PS1-5