ATS Chemistry Pure substances and Formulations

What is a formulation?

• A compound that has been designed to be a useful product
• A compound that needs to be separated to make it useful
• A mixture that has been designed as a useful product
• A mixture that needs to be separated to make it useful

What process is used to separate a mixture of solutions?

• Crystallisation
• Distillation
• Filtration
• Chromatography

In paper chromatography, what is the stationary phase?

• solvent
• paper
• sample

In paper chromatography, what is the mobile phase?

• solvent
• paper
• sample

What term is given to something that a substance can be dissolved in?

• solute
• solvent
• solution
• soluble

What term is given to a substance that is being dissolved?

• solute
• solvent
• solution
• soluble

What term is given to a substance that can dissolve?

• solute
• solvent
• solution
• soluble

What term is given to a substance that cannot be dissolved?

• solute
• solvent
• solution
• insoluble

What does the term Rf value mean?

• running factor
• retention factor
• releasing factor
• reducing factor

In Chemistry, what is a pure substance?

• a substance that has had nothing added to it
• a substance made up of only one thing
• a substance made up of only one type of element or compound
• a mixture of elements and