All Mixed Up Investigation

What mixture could you use this tool to best separate the mixture?

• Sugar and Salt/ Azúcar y sal

• Sand and Rocks / Arena y rocas

• Apples and grapes / Manzanas y uvas

How do you separate iron filings from sand?

• You can use a filter paper / Puedes usar un filtro.

• You can use a hot plate / Puedes usar la hornilla

• You can use a magnet / Puedes usar un imán.

• You can use all of these methods / ¡Puedes usar todos los métodos!

What is a mixture?

• A combination of two or more substances without a defined ratio.

• Two or more substances chemically bonded together.

• A perfect ratio of elements and atoms.

• Chemically bonded electrons.

What type of mixture is this

• heteregenous

• homogeneous

If you spilled nails in a sandbox, what separation tool/method could you use to clean out the sandbox so it would be safe for children to play in?

Si derramas clavos en un arenero, ¿qué herramienta de separación podrías utilizar para limpiar el arenero para que los niños puedan jugar sin peligro?

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What happened to the white powder when it mixed with the warm water?

• The white powder particles disappeared into the air.

• The white powder particles got stuck to the sides of the cup.

• The white powder particles break down into smaller particles and dissolve into the water.

• The white powder particles expand into larger particles and disappear into the water.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

What is the total weight (mass) of the white powder and water mixture?

• 20 grams

• 100 grams

• 80 grams

• we cannot determine the weight of the mixture with this information.

Tags

NGSS.MS-PS1-5

What is a solution in scientific terms?

• A homogeneous mixture of two or more substances.

• A heterogeneous mixture of substances.

• A pure chemical compound.

• A single element.

Which of the following is an example of a colloid?

• Saltwater

• Milk

• Sand and water

• Pure gold

In a mixture of sand and iron filings, which method can be used to separate the components?

• Filtration

• Magnetic separation

• Evaporation

• Distillation