5.P.2.2 Law of Conservation of Mass

Front

If Anthony adds 0.25 grams of baking soda to 5 grams of water and stirs, what will the mass of the resulting solution be?

Back

5.25 grams

Front

If 10 grams of water are added to 5 grams of salt, how much salt water will be made?

Back

15 grams

Front

A rock weighing 60 g is broken into 2 pieces. What are possible weights for the two pieces of rock?

Back

30 g and 30 g

Front

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?

Back

50 grams

Front

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 it most likely weigh?

Back

6 pounds

Front

Thomas has 1,200 g of salt water. Which are the correct measures of salt and water before they were mixed? Options: 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

Back

600 g of salt and 600 g of water

Front

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?

Back

200 g

Front

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?

Back

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

Front

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?

Back

233 grams

Front

What should Mrs. Godfrey do to prove that the total mass of an object remains the same before and after burning? Options: 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

Back

burn the object in a closed container