Laws of Conservation Practice 1

Bob puts 200 grams of ice into a pitcher with 900 grams of water. He gets distracted and comes back later to find that the ice has melted in the water. How many grams of water does Bob now have in the pitcher?

• 200 g

• 700 g

• 900 g

• 1,100 g

Tags

NGSS.MS-PS1-5

Jamie weighs a glass of water and observes its weight to be 12 ounces. Jamie then adds 6 ice cubes to the glass of water. Each ice cube weighs one ounce. After all of the ice cubes have melted, what will be the approximate weight of the glass of water?

• 6 ounces

• 12 ounces

• 18 ounces

• 24 ounces

Tags

NGSS.MS-PS1-5

A group of students mixed 10 ounces of liquid X with 12 ounces of liquid Y to create a new substance. The experiment was conducted in a closed soda bottle weighing 3 ounces. The students weighed the bottle with the new substance immediately following the experiment. Which best describes their results?

• It weighed 13 ounces because liquid Y dissolved in liquid X.

• It weighed 15 ounces because liquid X dissolved in liquid Y.

• It weighed 25 ounces because the weight of both liquids and the bottle remain the same and must be added together.

• It weighed 47 ounces because the weight of the liquids is doubled when they are mixed, and the weight of the bottle remains the same.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

James wanted to observe the interaction between his favorite soda and some candy. James poured 20 ounces of soda and 2 ounces of candy in a closed container weighing 5 ounces. What would most likely be the weight of the mixture and container after the candy has completely dissolved?

• 5 ounces

• 20 ounces

• 25 ounces

• 27 ounces

Tags

NGSS.MS-PS1-5

Mrs. Champion’s class performed an experiment in which they combined 10 ounces of lemon juice with 15 ounces of vinegar to create a new cleaning solution. The experiment was conducted in a sealed spray bottle weighing 5 ounces. The students weighed the bottle with the solution immediately following the experiment. What did the students most likely discover about the weight of the solution and the bottle?

• It weighed 25 ounces because the solutions mixed and dissolved the bottle.

• It weighed 10 ounces because some of the solution dissolved when it was combined.

• It weighed 60 ounces because the solutions doubled in quantity when mixed together.

• It weighed 30 ounces because the solutions mixed and everything was contained inside the closed bottle.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Mr. Cooper’s class conducts an experiment by combining 8 ounces of vinegar with 6 ounces of lemon juice. The experiment occurs in a closed container weighing 4 ounces. After the interaction, what is the weight of the container and solution?

• 10 ounces

• 11 ounces

• 14 ounces

• 18 ounces

Tags

NGSS.MS-PS1-5

Max adds 250 g of water and 250 g of rice to a pot on a stove and covers the pot with a lid. As the water boils, it gets absorbed by the rice. How much do the contents of the pot weigh after the rice finishes cooking?

• 250 g

• 400 g

• 500 g

• 600 g

Tags

NGSS.MS-PS1-5

A fresh apple is placed in a tightly sealed glass jar. The total mass of the jar and apple is measured. After a week, the apple in the jar begins to rot. The total mass is measured again. Which can be accurately predicted?

• The total mass will not change because the amount of matter in the jar and the apple will not change.

• The mass of the jar will be the total mass because no matter will be left in the jar after the apple rots.

• The total mass will increase because the rotting apple will produce gases.

• The total mass will decrease because the rotting apple will release heat.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Mike is racing his electric toy truck. The truck hits a brick wall, and the front of the truck gets crushed. If the truck originally had a mass of 2.0 kg, how much mass does it most likely now have?

• 1.5 kg

• 1.9 kg

• 2.0 kg

• 2.2 kg

A teacher adds 2 g of chalk to 25 g of vinegar in a tightly sealed jar. The chalk and vinegar react, and gas bubbles form. What is the total mass of the jar’s contents after the reaction takes place?

• 23 g

• 25 g

• 27 g

• 50 g

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2