Ps2

James blows up a balloon as a demonstration in class.

Which sentence explains what he is trying to show his class?

• Air has no weight, which will cause the balloon to float.

• Air is made of very large particles that are invisible.

• Air is not made of matter and will have no effect on the balloon.

• Air is made of particles that are very small and cannot be seen.

A glass is filled half full of water and half full of ice. The weight of the ice and water is 250 milligrams. Which sentence describes the weight of the water when the ice melts in the glass?

• It will weigh 250 milligrams.

• It will weigh a little less than 250 milligrams.

• It will weigh twice as much as 250 milligrams.

• It will weigh a little more than 250 milligrams.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Mary mixed 100 milliliters (mL) of water with 12 mL of sugar in a bowl. She left the bowl with the sugar and water mixture outdoors. After a week, she noticed crystals and a small amount of liquid at the bottom of the bowl. Which sentence describes what happened in the bowl?

• There was one new substance formed.

• There were no new substances formed.

• There were two new substances formed.

• There were many new substances formed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Danea has a mixture of two solids. One is white and is tiny crystals. The other solid is black and is tiny flakes. She pours water on them. The white solid disappears, and the black solid floats to the top of the water. Which two materials did Danea most likely mix together?

• salt and pepper

• milk and iron filings

• white and black sand

• sugar and powdered drink mix

Tags

NGSS.MS-PS1-2

LaToya measured 60 milliliters of vinegar into a bottle. She measured 5 grams of baking soda into a balloon. She placed the balloon over the top of the bottle and shook the baking soda into the vinegar. She repeated these steps, adding 10, 15, and 20 grams of baking soda. She put her observations in a table.

Which conclusion is supported by her data?

• When more vinegar was added, a larger volume of solid formed.

• When more baking soda was added, a larger volume of gas formed.

• Changing the weight of baking soda added did not change the results of the investigation.

• Changing the volume of vinegar added changed the reaction from a physical to a chemical change.

Tags

NGSS.MS-PS1-2

Joyce measured 60 milliliters of hydrogen peroxide into a beaker and measured its temperature. She added yeast to the hydrogen peroxide and stirred the beaker. She measured the temperature at three different times in degrees Celsius, °C. She wrote down her measurements and observations in a table.

Which sentence describes her results?

• Stirring caused the temperature to increase and fewer bubbles to form.

• A physical change caused the temperature to decrease and bubbles to form.

• A chemical change caused the temperature to increase and more bubbles to form.

• Mixing two substances caused the temperature to decrease and fewer bubbles to form.

Tags

NGSS.MS-PS1-2

Tila mixes 15 milliliters (mL) of oil with

5 mL of vinegar to make salad dressing.

Which bar graph accurately shows Tila's ingredients?

• 
• 
• 
• 

Charles makes three mixtures of milk and peanut butter. He puts lids on each container and freezes each mixture. Some of his measurements are listed here.

• Container 1: 10 grams milk, 11 grams total weight, 11 grams frozen weight

• Container 2: 20 grams milk, 21 grams total weight, 21 grams frozen weight

• Container 3: 30 grams milk, 31 grams total weight, 31 grams frozen weight

Choose the letters of all the statements that describe the patterns in the mixtures.

• The weights of the mixtures do not change in the freezer.

• Charles added the same amount of milk to each container.

• The total weight is the sum of all the ingredients for each mixture.

• Charles added the same amount of peanut butter to each container.

Tania weighs a piece of wood. It weighs 25 grams. Her mother puts it in a small steel box and burns it for five minutes. Tania notices there is still some wood and a pile of ash left over after burning. Tania weighs the wood again after it has cooled. It now weighs 15 grams.

Which answer reflects how much each would weigh?

• wood-25 grams; burned wood- 15 grams; ash- 20 grams

• wood-20 grams; burned wood- 25 grams; ash- 15 grams

• wood-25 grams; burned wood- 20 grams; ash- 15 grams

• wood-0 grams; burned wood- 0 grams; ash- 25 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Natasha puts 2 ounces of hot chocolate powder into 8 ounces of water. She mixes them together. Natasha heats the hot chocolate mixture for one minute.

Choose the letters of the phrases that describe the mixture, after mixing.

• weight stays the same

• weight increases

• weight decreases

• weight is 10 ounces

• weight of the water is 9 ounces