Look at the diagram showing a solid being added to a liquid to make a mixture. What is the name of this process?
Look at the diagram showing a solid being added to a liquid to make a mixture. What is the name of this process?
True or false? Oil can dissolve in water.
What is the scientific term used to describe a substance that will dissolve?
What is the scientific term used to describe a substance that will not dissolve?
Ethanol is often used to dissolve things in. What is the name given to a chemical that something dissolves in?
Look at the diagram showing a solid being added to a liquid to make a mixture. What is the name of this process?
Look at the diagram. What do we call the solid being added to the liquid?
Look at the diagram. What do we call the liquid that the solid is being added to?
The diagram shows two different substances. Which one is the alloy?
Three salt solutions are to be used in an experiment, a 0.5 g/dm3 solution (solution 1), a 1.5 g/dm3 solution (solution 2) and a 2.5 g/dm3 solution (solution 3). Which solution will contain the fewest salt particles in a particular volume?
True or false? In any solution, the solvent is always water.
Sophie dissolves some sodium chloride in water. What is the solute in this example?
True or false? We can use the melting and boiling point of a substance to identify it.
Name the technique used to separate a mixture of substances that are soluble in the same solvent.
Name the technique used to separate a solid from a liquid.
What is the name of the piece of apparatus labelled A?
Look at the diagram. What is the name of the process shown?
Look at number 3 in the diagram. Does this show a mixture or a pure substance?
Look at the diagram. True or false: this process can be used to assess the purity of a coloured substance.
Felt tip pens often contain a number different inks to produce a single colour. Which method could be used to identify the different inks in a black felt tip pen?
A student has a mixture of ink and water. Identify a method that can be used to separate the ink and water.
What processes occur during a distillation method?
True or false? Each gas in the air has a different boiling point.
Name the process that can be used to produce completely pure water.
Name the technique used to separate and collect a soluble solid from a solution.
Adina is stranded on an island in the middle of the ocean. There is one stream on the island but the water has lots of sand in it. Which technique should she use to remove the sand from the water? (Hint: give the technical term)
Charlotte has some copper sulfate solution. She wants solid copper sulfate. Which technique should she use?
Look at the diagram. Calculate the Rf value for sample 7. Give your answer to two decimal places.
Which arrow points to pure water?
If you carried out the process in the diagram below, what temperature would you expect the thermometer to show? Give your answer in degrees Celsius.
