Separation Techniques and Mixtures

What is a key difference between a mixture and a solution?

• A mixture cannot be separated easily.

• A solution can be separated easily.

• A mixture can be separated easily.

• A solution is made of only one substance.

Which of the following is an example of a mixture?

• Milk

• Salt dissolved in water

• Oil and vinegar

• Sugar dissolved in tea

What is the purpose of a hypothesis in an experiment?

• To list the materials needed

• To predict the outcome of the experiment

• To describe the steps of the experiment

• To summarize the results

Which tool is used to separate metal filings from a mixture?

• A magnet

• A coffee filter

• A spoon

• A magnifying glass

How can you retrieve salt from a saltwater solution?

• By using a magnet

• By filtering it through a coffee filter

• By stirring it with a spoon

• By boiling the water