Separating Techniques

Which technique would be good to produce pure ethanol from a mixture of water and ethanol

• Filtration

• Distillation

• Crystallisation

• Chromatography

Which factors affect the rate of diffusion?

• Temperature

• Catalyst

• Particle size

• None of these

What are the properties of a solid?

• Irregular arrangement of particles

• Regular arrangement of particles

• Spaces between particles

• No spaces between particles

which factor affects the activation energy of a reaction

• Catalyst

• Concentration

• Temperature

• Pressure

Why would a decrease in pressure lead to a decrease in rate of reaction?

• Increased activation energy

• Decreased Kinetic Energy of particles

• Particles further apart

• Less frequent collisions

Which of the following apply to this substance?

• Solid

• Compound

• Mixture

• Liquid

Which substance is this most likely to be?

• Copper

• Iodine

• Sodium Chloride

• Steel

What state is this substance in? How do you know?

Is it an element, compound or mixture? How do you know?

Which line represents a faster rate of reaction? How do you know?