Law of Conservation of Mass

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

• 2 grams
• 5 grams
• 10 grams
• 15 grams

Tags

NGSS.MS-PS1-5

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

• 20 g and 20 g
• 30 g and 20 g
• 30 g and 30 g
• 45 g and 10 g

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?

• 4 grams
• 20 grams
• 50 grams
• 100 grams

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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?

• 4 pounds
• 6 pounds
• 7 pounds
• 5 pounds

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

• 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

Tags

NGSS.MS-PS1-2

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?

• 50 g
• 100 g
• 200 g
• 400 g

Tags

NGSS.MS-PS1-4

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?

• 3 grams

• 200 grams

• 230 grams

• 233 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• increases

• decreases

• stays the same

• is destroyed

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

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?

• 1.0 kilogram

• 1.5 kilograms

• 2.0 kilograms

• 2.5 kilograms

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

NGSS.MS-PS3-4

A student mixes 125 grams of sugar, 250 grams of water and 5 grams of flavoring. The solution weighs...

• 250 grams

• 380 grams

• 375 grams

• 400 grams

Tags

NGSS.5-PS1-2