5.P.2.2 Law of Conservation of Mass
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  • Question 1
    120 seconds
    Q. 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?
    answer choices
    4.75 grams
    5.0 grams
    5.25 grams
    7.5 grams
  • Question 2
    120 seconds
    Q. If 10 grams of water are added to 5 grams of salt, how much salt water will be made?
    answer choices
    2 grams
    5 grams
    10 grams
    15 grams
  • Question 3
    120 seconds
    Q. A rock weighing 60 g is broken into 2 pieces. What are possible weights for the two pieces of rock?
    answer choices
    20 g and 20 g
    30 g and 20 g
    30 g and 30 g
    45 g and 10 g
  • Question 4
    120 seconds
    Q. Jackie creates a piece of artwork by melting crayons and mixing the colors together. She uses 10 crayons that weighed 5 grams each. What is most likely the weight of her artwork?
    answer choices
    4 grams
    20 grams
    50 grams
    100 grams
  • Question 5
    120 seconds
    Q. Leslie places 5 pounds of ice in a 1 pound bucket with a lid. The next day, she notices all the ice has melted. When she weighs the bucket with the melted ice, what will itmost likely weigh?
    answer choices
    4 pounds
    6 pounds
    7 pounds
    5 pounds
  • Question 6
    120 seconds
    Q. Thomas has 1,200 g of salt water. Which are the correct measures of salt and water before they were mixed?
    answer choices
    600 g of salt and 600 g of water
    900 g of salt and 200 g of water
    1,200 g of salt and 1,200 g of water
    700 g of salt and 5,000 g of water
  • Question 7
    120 seconds
    Q. Maria fills a bowl with 200 g of water. She puts the bowl of water in the freezer, and the water freezes. Which will most likely be the mass of the frozen water?
    answer choices
    50 g
    100 g
    200 g
    400 g
  • Question 8
    120 seconds

    A student notices that an inflated balloon gets larger when it is warmed by a lamp. Which best describes the mass of the balloon as a result of this change?

    answer choices

    The mass of the balloon increases because the size of the balloon has increased.

    The mass of the balloon increases because the temperature of the balloon has increased.

    The mass of the balloon stays the same because the gas inside the balloon still has the same mass after it warms up.

    The mass of the balloon stays the same because warming decreases the mass enough to cancel out the effect of increasing the size.

  • Question 9
    30 seconds

    A teacher places a penny into an amount of acid in a closed container to demonstrate a chemical change. The penny weighs 3 grams and the acid 230 grams. After the chemical reaction takes place, what will be the mass of the penny and acid?

    answer choices

    3 grams

    200 grams

    230 grams

    233 grams

  • Question 10
    30 seconds

    Mrs. Godfrey wants to prove to her students that when an object is burned, its total mass is the same before and after the reaction. What should Mrs. Godfrey do to make sure this is shown by the experiment?

    answer choices

    burn the object in a closed container

    burn the object outside on a nice day

    add water to the object after it is burned

    split the object into two equal pieces before burning

  • Question 11
    30 seconds

    A jeweler melts gold to make jewelry. As the gold melts, the mass

    answer choices



    stays the same

    is destroyed

  • Question 12
    30 seconds

    Two kilograms of water are placed in a closed container. The container is placed in the freezer, and after a few hours it turns into ice. Which is most likely the mass of the ice?

    answer choices

    1.0 kilogram

    1.5 kilograms

    2.0 kilograms

    2.5 kilograms

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