Mixtures and Changes in Matter

Julia wants to get clean water from a mix of sand and water. What should she use?

• Magnet

• Decanting

• Sieve

• Filter paper

Camila mixes sugar in her lemonade and sees the sugar disappear. What type of mixture did she make?

• Heterogeneous mixture

• Solution

• Physical change

• Chemical change

Pedro leaves his iron toy outside in the rain. After days, it turns orange. What happened?

• Physical change

• Chemical change

• Mixture formed

• It melted

Laura puts sand and water in a jar and shakes it. Later, the sand is at the bottom. Why?

• Sand dissolved

• It is a solution

• Sand does not dissolve in water

• It became one material

Carlos mixes plastic garbage and iron nails. How can he separate the iron nails?

• Use a filter

• Use a magnet

• Boil the mixture

• Add water

Daniel boils water to make pasta. What kind of change is boiling water?

• Physical change

• Chemical change

• Solution made

• New substance created

Samuel has a mixture of oil and water. What process should he use to separate them?

• Sieving

• Filtering

• Decanting

• Magnetism

Santiago wants to separate clean water from salty water. He heats the salty water and collects the steam. What method is he using?

• Filtration

• Sieving

• Distillation

• Decanting

Ana burns a piece of paper. The paper changes color and makes smoke. What type of change is this?

• Physical change

• Mixture change

• Solution change

• Chemical change

Andrea has a mix of rice and flour. What is the best way to separate them?

• Filtering

• Sieving

• Evaporation

• Decanting