Mid Year Assessment Practice

A student has two substances: 5 g of baking soda and 50 g of vinegar.
These materials are mixed together in a clean cup with no lid. The mixture bubbles when the materials are mixed. What would you expect the materials in the cup to weigh after the bubbling stops?

• The mass of the mixture in the cup would be 55 g.

• The mass of the mixture in the cup would be a little less than 55 g.

• The mass of the mixture in the cup would be a little more than 55 g.

  
  

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student has two substances: 10 g of baking soda and 50 g of vinegar.
These materials are mixed together in a clean cup sealed with a lid, what would you expect the mass to be after the bubbling stopped?

• The mass of the mixture in the cup would be 60 g.

• The mass of the mixture in the cup would be less than 60 g.

• The mass of the mixture in the cup would be more than 60 g.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student makes a flourless chocolate cake. He measures out these ingredients.

115 grams chocolate
100 grams butter (B)
175 grams sugar (S)
56 grams (2) eggs (E)

Which pair of graphs best represents the mass of the ingredients and the mass of the cake mixture in the bowl?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Students in a class were debating whether functions in the human body involve chemical reactions.

Which two statements are evidence of a chemical change?

• The food we eat gets broken down into smaller pieces as a result of chewing.

• 
  We inhale oxygen and exhale carbon dioxide.

• 
  Different kinds of food get mixed in your stomach.

• 
  When you eat, some kinds of food make you burp

Tags

NGSS.MS-PS1-2

Students made two citric acid solutions. They put 60 mL of water in each of two cups. They put 10 spoons of citric acid in cup P and 12 spoons in cup Q. Both solutions were saturated. The students filtered each solution.

Which picture shows what the balance would look like if the students put 50 mL of each solution in the cups on the balance?

• 
• 
• 
• You can not tell from the information given.

Which model represents the concentration of CO₂ in the year 1900?

• 
• 
• 
• 

Tags

NGSS.MS-ESS3-5

Which model represents the concentration of CO₂ in the year 2000?

• 
• 
• 
• 

Tags

NGSS.MS-ESS3-5

A young child planted an acorn in their backyard. Sixty years later the acorn had grown into a large oak tree. Which statement provides the best evidence that the tree growth is the result of chemical reactions?

• 
  Plants take in liquid water through their roots and release water vapor through their leaves.

• Plants release oxygen that animals inhale.

• 
  Plants take in nutrients that are dissolved in water.

• Plants use water and carbon dioxide (CO₂) to make sugar.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which statement describes what will be left in each cup after all the water evaporates from each cup? (Mark the one best answer.)

• 
  10 g of small-grain salt and 10 g of large-grain salt

• 
  90 g of small-grain salt and 90 g of large-grain salt

• 
  0 g of small-grain salt and 5 g of large-grain salt 

• 
  100 g of small-grain salt and 10 g of large-grain salt

  
  

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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?
(Mark the one best answer.)          

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

• 
  The solution tasted less sour after filtering.

• 
  The solution tasted the same after filtering.

• The solution tasted more sour after filtering.