Mixtures and Solutions In 1-2 I Check

Which statement describes what will be left in each cup after all the water evaporates from each cup?

• 0 grams of small grain salt and 5 grams of large grain salt

• 90 grams of small grain salt and 90 grams of large grain salt.

• 100 grams of small grain salt and 10 grams of large grain salt.

• 10 grams of small grain salt and 10 grams of large grain salt.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

Citric acid is a solid that dissolves in water. It makes the water taste sour. A solution of citric acid and water was poured through a filter. The teacher gave students permission to taste the solution after filtering it.

Which sentence best describes how the solution tasted after it was poured through the filter?

• The solution tasted more sour after filtering it.

• The solution tasted less sour after filtering it.

• The solution tasted the same after filtering it.

• It is impossible to know how sour it was without actually tasting it.

Knowing the particle size of the solid materials in a mixture helps you know __________.

• How much the mixture will weigh

• What the crystals will look like after evaporation

• whether one of the materials will dissolve

• Which tools to use to separate the materials

Later when looking on the Internet they found this photograph of crystals. What substance do you think made these crystals?

• 
• 
• 

Tags

NGSS.MS-PS1-1

A fifth-grade student was showing her little brother what she was learning in science class. She mixed 20 g of a white powder in 80 mL of warm water. The mixture stayed clear. Her brother said, “Wow! That’s magic! The white powder is gone!” What happened to the white powder?

• The white powder melted

• The white powder dissolved.

• The white powder evaporated.

• The white powder is gone.

Tags

NGSS.5-PS1-1

NGSS.5-PS1-3

NGSS.5-PS1-4

A fifth-grade student was showing her little brother what she was learning in science class. She mixed 20 g of a white powder in 80 mL of warm water. The mixture stayed clear. Her brother said, “Wow! That’s magic!

What is the weight (mass) of the white powder and water mixture?

• 60 g

• 80 g

• 20 g

• 100 g

Tags

NGSS.MS-PS1-5

An ice cube turns into liquid when (a)   energy is added.

Tags

NGSS.MS-PS1-4

A spoonful of sugar cannot be seen after it is mixed with a cup of tea. This happens because the sugar (a)   .

Tags

NGSS.MS-PS1-2

An ice cube turns into a puddle on a plate. This occurs because the ice cube (a)   .

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

A fifth-grade student was showing her little brother what she was learning in science class. She mixed 20 g of a white powder in 80 mL of warm water. The mixture stayed clear. Her brother said, “Wow! That’s magic! The white powder is gone!”

Draw and label a model to show why the white powder could not be seen when it was mixed with the warm water. Then write a few sentences to explain your model.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2