Warm Up 12/08 5.5A

Which one of these is NOT soluble in water?

• oil

• salt

• honey

• sugar

Which mixture could be separated using a magnet?

• Pepper and sugar

• pebbles and marbles

• Sand grains and seashells

• iron filings and pepper

Which mixture maintained its physical properties?

• Pebbles and sand, sand and water, water and salt, salt and iron filings.

• Sand and water, water and salt, salt and iron filings

• Pebbles and sand, sand and water, salt and iron filings

• Pebbles and sand, salt and iron filings

A student is asked to design a sleeve for a cup that will insulate thermal energy and not feel hot to the touch when the cup is filled with liquid. The students has 4 materials to choose from. Which of these materials is least useful as an insulator?

• cardboard

• aluminum

• rubber

• plastic

A science class tested 3 properties of different materials. The results are shown in the table above. Based on the table, which material would be best to use to insulate electrical wire?

• wood

• plastic

• copper

• steel

A student classifies the above objects shown based on their physical properties. Which property cannot be used to classify these objects into more than one group?

• Magnatism

• Mass

• Electrical Conductivity

• Solubility in water

Some students investigate the properties of matter of four objects using a hand lens, a magnet, and a beaker containing water. Their observations are recorded on the table. Which statement identifies a property that could be used to classify these objects into two different groups?

• Density can be used to separate objects that sink in water from objects that don't.

• Magnetism can be used to separate objects that are attracted to magnets from objects that are not.

• Solubility can be used to separate objects that dissolve in water from objects that do not.

• Physical state can be used to separate objects that are solid from objects that are not.

A students puts 4 objects in a bucket filled with water. Which 2 objects are most likely less dense than water?

• Wood block and metal paper clip.

• Plastic ball and glass marble.

• Metal paper clip and glass marble.

• Wood block and plastic ball

Two wires carrying electricity can create a spark if they come to close to each other. What is a good insulator for this?

• Plastic can melt if it gets heated.

• Plastic is a good insulator.

• Plastic is a good conductor.

• Plastic is softer than wire.

All matter can be classified by their physical properties. Which substance can be classified as being soluble in water?

• Sand

• Paper

• Iron Filings

• Salt