Science Check Ins

Jennifer left her bike outside, buried in snow. In the spring, when the snow melted, she found her bike covered in rust. Which best describes the change to the bike? 

• It was a chemical change, because the bike was a different color. 
• It was a chemical change, because the rubber tires were deflated. 
• It was a chemical change, because rust can be removed from the metal. 
• It was a chemical change, because rust is a new substance on the metal. 

Jane took a 1 ounce slice of bread and cut it into 2 pieces. On one side, she put 2 ounces of peanut butter. On the other side she put 1 ounce of jelly. Which will most likely be the weight of the finished sandwich? 

• 7 ounces
• 3 ounces
• 6 ounces
• 4 ounces

A piece of wood is sawed into several small pieces. This is an example of what kind of change? 

• physical
• chemical
• electrical
• mechanical

Which is an example of a chemical change? 

• baking a cake
• freezing water
• crushing a can
• breaking an egg

Tags

NGSS.MS-PS1-2

Jackie creates a piece of artwork by melting crayons and mixing the colors together. She uses 20 crayons that weighed 5 grams each. What is most likely the weight of her artwork? 

• 4 grams
• 5 grams
• 20 grams
• 100 grams

Tags

NGSS.MS-PS1-5

Anthony is performing an experiment. He adds 0.25 grams of baking soda to 5 grams of water and stirs. Anthony watches as the baking soda dissolves in the water. If Anthony weighs the water and baking soda solution, what will its mass be? 

• 4.75 grams
• 5.0 grams
• 5.25 grams

Tags

NGSS.MS-PS1-5

Dry ice immediately becomes a gas at room temperature. How much will the contents of 500 g of dry ice, placed in a closed container at room temperature, weigh after half the dry ice turns into a gas? 

• 250 g
• 350 g
• 500 g
• 600 g

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

The mass of a grape drink mixture is 150 grams. Kathy boils the mixture and notices that 50 grams of water has evaporated. Which will most likely be the result? 

• The mass of the grape juice mixture will be 50 grams. 
• The mass of the grape juice mixture will be 100 grams.
  
• The mass of the grape juice mixture will be 200 grams.
  
• The mass of the grape juice mixture will remain 150 grams. 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Sue is making pudding for her family. She mixes 490 g of cold milk with 90 g of pudding mix and then puts it in the refrigerator to solidify. About how many grams of pudding was made? 

• 90 g
• 190 g
• 400 g
• 580 g

Brad accidentally left his crayon box in the car on a hot day. Which best explains what happened to his crayons? 

• crayons melted; changed from solid to liquid 
• crayons melted; changed from liquid to solid
  
• crayons evaporated; changed from liquid to solid 

Tags

NGSS.MS-PS1-4