LockeD! - 5.5C - Mixtures and Solutions #4

Read the paragraph. Which of the following is a chemical change?

• Mixing baking soda and vinegar together

• Mixing marbles and rocks together

• Putting ice cubes in a glass of water

• Dissolving salt in a beaker of water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A suspension is a special kind of mixture. In a suspension, particles of a solid are suspended in a liquid and will not dissolve. The particles are large enough to be seen and the suspension appears cloudy. If the particles settle to the bottom, shaking and stirring will suspend the particles again. Which of the following is a suspension?

• Kool-Aid® mixed with water

• Spices in vinegar and oil (salad dressing)

• Chocolate powder stirred into a glass of milk

• Milk stirred into a cup of hot coffee

When the ingredients for a chocolate cake are being mixed, the cake batter is like a thick, brown soup. Which physical property of the cake is the SAME after the batter is baked?

• Color

• Size

• Shape

• Texture

Large deposits of salt are often found in deserts. For this salt to be usable, it must be separated from sand. If an engineer were designing a process to separate salt from sand, which of these differences would be the MOST useful?

• Salt and sand are different colors

• Salt dissolves in water, but sand does not

• Grains of sand are harder than grains of salt

• Grains of salt and grains of sand have different shapes

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

What process results from the spreading of sugar particles throughout water?

• Mixing

• Melting

• Dissolving

• Distributing

Tags

NGSS.5-PS1-4

Which substance completely dissolved in the lemon juice?

• Sugar

• Pepper

• Sand

• Baking soda

Tags

NGSS.MS-PS1-2

Which property of a solution below is the same as the properties of its ingredients?

• Sugar Water tastes sweet.

• Saltwater taste salty.

• Sugar water is a liquid.

• Air is a gas.

Which property of a sugar cube does not change when it dissolves?

• Color

• Taste

• Shape

• Texture

A student places a cube of sugar in a cup of hot tea and stirs the tea with a spoon. What change will occur?

• The tea will change temperature and get hotter

• The sugar cube will dissolve and get smaller

• The sugar cube and the tea will not change

• The tea will dissolve in the sugar cube

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

The graph shows what happened when salt was added to water in a glass. According to the graph, which of the statements are correct?

• Salt tastes different when water is heated.

• Salt will cause water to heat up faster.

• Salt is used to make hot water.

• Salt dissolves more easily in hot water.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4