Unit 3 Science

Burning of paper is a _______________ change

• Reversible change

• Irreversible change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Melting of ice is a _______________ change

• Reversible change

• Irreversible change

Tags

NGSS.5-PS1-2

Some solids like sugar can ................... in a liquid.

• dissolve

• soluble

• insoluble

• suspension

To separate a mixture of salt and water what separation tool/method is used?

• Filter

• Sieve

• Magnet

• Evaporation

Tags

NGSS.MS-PS1-4

If you had a mixture of rocks and sand and needed to separate them what method would work best?

• 
• 
• 
• 

What happens when a substance dissolves in water?

• The substance floats to the top

• The substance breaks down and becomes part of the water

• The substance sinks to the bottom

Tags

NGSS.MS-PS1-2

Temperature has an effect on the speed. Solid substance dissolves faster in hot water.

• True

• False

Tags

NGSS.MS-PS1-4

Anna filled a ​cup with hot tea. Then she added a sugar cube. ​Which of these will help to make the sugar cube dissolve more quickly? 

• stirring the hot tea
• adding more sugar cubes
• adding ice to the tea
• pouring more tea into the cup

Tags

NGSS.MS-PS1-4

substance that dissolves

• solvent
• solution
• solute
• unsaturated

substance that dissolves the solute

• solution
• solvent
• saturation