Science on Matter

A student has puts 4 objects in a bucket filled with water. The objects are listed above. Which two 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

A combination of two or more substances where each keeps its own properties and both can be easily separated is called-

• a mixture

• a solution

• a solute

• a solvent

Icicles start out as liquid water droplets and then turn into solid ice. What causes a liquid to change into a solid?

• Heat is added.

• Heat is taken away.

• Heat is produced.

• Heat is  frozen.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

This is a picture of oil and water.  Why does the oil float on top of the water?

• The water is less dense than the oil so it floats on top of the oil.

• The oil is less dense than the water so it floats on top of the water.

• The oil is more dense than the water so it sinks.

• The oil is less dense than the water so it sinks.

Tags

NGSS.MS-PS1-2

A teacher wears protective gloves to lift a metal pan filled with boiling water from a hot plate. Why are the protective gloves necessary?

• The metal pan creates thermal energy.

• the metal pan insulates thermal energy.

• The metal pan conducts thermal energy.

• The metal pan reduces thermal energy.

If purple drink mix is added to water, what change will occur to the water?

• The drink mix will cause the water to freeze

• The water will totally disappear

• The drink mix will heat the water

• The water will change color

Tags

NGSS.MS-PS1-2

Which type of objects would float?

• Those heavier than water

• Those with the same density as water

• Those less dense than water

• Those that are only made of gas

Which process will separate the sugar from mixture of sugar and water?

• Stirring the mixture

• Evaporating the water

• Adding more water

• Adding more sugar

Which of the following is a good conductor of electricity?

• glass rod

• cotton string

• plastic tubing

• copper penny

Which of these is NOT soluble in water?

• oil

• salt

• honey

• sugar