Solutions

All of the following are examples of a solution except –

• soda

• a chocolate chip cookie

• lemonade

• the air we breathe

A teacher shows the students a solution of vinegar and water in a beaker. Then she adds one additional cup of vinegar to the beaker and stirs the solution. Which properties of the solution change after she adds more vinegar?

• The volume and the mass of the solution.

• The temperature and the volume of the solution.

• The volume and the physical state of the solution.

• The mass and the temperature of the solution.

Tags

NGSS.MS-PS1-2

A teacher adds sugar into a beaker filled with water and mixes it until it completely dissolves. Which statement listed below is correct?

• Sugar is the solute and water is the solution.

• Sugar is the solvent and water is the solute.

• Sugar is the solvent and water is the solution.

• Sugar is the solute and water is the solvent.

All of the following are correct statements about solutions except –

• a solution must contain two or more different substances that can be physically separated

• a solution must be a liquid

• the solute must be evenly distributed in the solution, also known as homogeneous

• a solution must have at least one solute and a solvent

Which of the following is a solution?

• Sand and water

• Oil and water

• Salt dissolved in water

• Iron filings and sand

A teacher is conducting an experiment. He adds powdered lemonade to one beaker, sugar to a second beaker and sand to a third beaker. He then adds water to each beaker and stirs the three different mixtures and waits for two minutes. What physical property of the substances is he trying to demonstrate for the class?

• Solubility in water

• Relative density

• Physical state

• Melting point

Which of the following is an example of a solution?

• Italian salad dressing

• Orange juice with pulp

• Cereal

• Coffee

Which of the substances below will NOT dissolve when mixed with water?

• Sugar cube

• Vinegar

• Pepper

• Lemon juice

Which of the following is the correct scientific definition of a solution?

• A means of solving a problem or dealing with a difficult situation

• A homogeneous mixture of two or more substances; all substances must be completely dissolved into each other

• Two or more substances are chemically combined and cannot be easily separated

• Two or more substances are combined, but they keep their original properties and can be easily separated

A teacher shows some students a solution of sugar and water in a beaker. Then she adds four ice cubes to the solution. All the following properties of the solution change as the ice cubes melt except –

• the mass

• the temperature

• the volume

• the physical state

Tags

NGSS.MS-PS1-4