An increase in mass could happen if iron atoms are __________ the environment.

being produced and released into

being exchanged in equal amounts with

Use the data from the graph to select the best claim.

Energy is transferred from each system to the thermometers.

Energy is transferred from the thermometers to each system.

Energy is not transferred in either of the systems.

Use the data from the graph to select the best claim.

The thermometer measured a higher temperature at 50 minutes than at 0 minutes.

The thermometer measured a lower temperature at 50 minutes than at 0 minutes.

The temperature did not change between 0 minutes and 50 minutes.

The students want to redesign the hand warmer bag in such a way that the hand warmer would take less time to get warm but would also remain a safe product. The new design includes more small holes in the fabric of the hand warmer bag. Which statement BEST evaluates if the new design would or would not work.

The new design would work because when the iron in the hand warmer is exposed to more oxygen in the air, the temperature will increase at a faster rate.

The new design would not work because the additional holes in the bag would allow oxygen from the air to move into the bag and cool the iron.

The new design would not work because the only way to increase the temperature is to generate more energy by adding iron.

The new design would work because when pieces of iron are able to move out of the additional holes, they will be in contact with more oxygen, which will quickly increase the temperature..

The students want to redesign the hand warmer bag in such a way that the hand warmer would take less time to get warm but would also remain a safe product. The new design includes more small holes in the fabric of the hand warmer bag. Which statement BEST describes a trade-off if a new hand warmer bag is designed to get warm faster than the original design?

The hand warmer bag would cool down faster than the original design.

The hand warmer bag would be more expensive than the original design.

The hand warmer bag would contain more iron and be bigger than the original design.

The hand warmer bag would not get as warm as the original design.

If the average movement of the particles in a sweater increase, what will happen to the temperature of the sweater?

It will change after a long delay

Meredith takes a glass of water outside on a hot summer day and leaves it there for several hours. When she returns, part of the water has evaporated and there is less water in the glass. What kind of state change did some of the water go through to make it disappear?

It changed from a liquid to a gas.

It changed from a gas to a liquid.

It changed from a solid to a gas.

It changed from a liquid to a solid.

Which of the following best describes the process of photosynthesis?

A) Conversion of light energy into chemical energy by plants

B) Breakdown of glucose into energy in animal cells

C) Absorption of nutrients from the soil by plant roots

D) Exchange of gases between plants and the atmosphere

A scientist is conducting an experiment to test the effect of temperature on the solubility of a salt in water. Which of the following is the independent variable in this experiment?

B) The temperature of the water

D) The time taken for the salt to dissolve

Which of the following statements best explains why ice floats on water?

B) Ice has a lower density than water

D) Ice has a higher temperature than water

What is the role of chlorophyll in photosynthesis?

B) Breaking down water molecules

Which of the following best describes the law of conservation of mass?

B) Mass is conserved in a closed system

A) Mass can be created and destroyed

D) Mass is only conserved in chemical reactions

M-Step Science Practice Quiz

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Two students are outside in the cold, waiting for a bus. One of the students has a package of hand warmers and offers to share them with the other students. The student opens the package and they each put a hand warmer bag in one of their gloves. After a few minutes, the students notice that the hand warmer bags start to feel warm. They decide to ask their science teacher if they can test the materials inside the hand warmer bags. After reading the ingredients on the hand warmer package, the students decide to focus on iron because it is the most common ingredient. The students designed the following procedures. (1.) Open a new hand warmer package. (2.) Cut open the hand warmer bag. (3.) Separate the materials by using a magnet to attract the iron. (4.) Place the iron on a dish. (5.) Make initial observations and calculations to record properties of the iron. (6.) Leave the iron in the dish overnight. (7.) Record final observations and calculations the next day. The students can tell that a chemical reaction involving iron __________ .

occurred

did not occur

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Two students are outside in the cold, waiting for a bus. One of the students has a package of hand warmers and offers to share them with the other students. The student opens the package and they each put a hand warmer bag in one of their gloves. After a few minutes, the students notice that the hand warmer bags start to feel warm. They decide to ask their science teacher if they can test the materials inside the hand warmer bags. After reading the ingredients on the hand warmer package, the students decide to focus on iron because it is the most common ingredient. The students designed the following procedures. (1.) Open a new hand warmer package. (2.) Cut open the hand warmer bag. (3.) Separate the materials by using a magnet to attract the iron. (4.) Place the iron on a dish. (5.) Make initial observations and calculations to record properties of the iron. (6.) Leave the iron in the dish overnight. (7.) Record final observations and calculations the next day. The data table shows us that a new substance ___________ form overnight.

did

did not

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Two students are outside in the cold, waiting for a bus. One of the students has a package of hand warmers and offers to share them with the other students. The student opens the package and they each put a hand warmer bag in one of their gloves. After a few minutes, the students notice that the hand warmer bags start to feel warm. They decide to ask their science teacher if they can test the materials inside the hand warmer bags. After reading the ingredients on the hand warmer package, the students decide to focus on iron because it is the most common ingredient. The students designed the following procedures. (1.) Open a new hand warmer package. (2.) Cut open the hand warmer bag. (3.) Separate the materials by using a magnet to attract the iron. (4.) Place the iron on a dish. (5.) Make initial observations and calculations to record properties of the iron. (6.) Leave the iron in the dish overnight. (7.) Record final observations and calculations the next day. Choose one set of properties that supports a chemical reaction has occurred.

density and color

color and volume

volume and texture

texture and mass

Tags

NGSS.MS-PS1-2

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The students decide to develop a model to explain why the iron appeared to change overnight. To complete the model the students need to include: (1.) iron atoms from the hand warmer (2.) oxygen atoms from the air (3.) the final substance they observed Select the correct number of iron (Fe) atoms that should go in Box 1 to complete the student model.

1

2

4

6

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of these is NOT a practice of science?

asking questions

analyzing data

making claims without evidence

carrying out investigations

Tags

NGSS.MS-LS1-3

NGSS.MS-LS2-4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of these is NOT a practice of science?

asking questions

analyzing data

making claims without evidence

carrying out investigations

Tags

NGSS.MS-LS1-3

NGSS.MS-PS1-2

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The students decide to develop a model to explain why the iron appeared to change overnight. To complete the model the students need to include: oxygen atoms from the air, the final substance they observed. Select the correct number of oxygen (O) atoms that should go in Box 2 to complete the student model.

1

2

4

6

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

8.

MULTIPLE SELECT QUESTION

1 min • 1 pt

After observing what happens with the iron in the hand warmers, the students decide to work on improving the hand warmers to make them get warm faster. The students observe that the hand warmer bag is made of fabric containing tiny holes. They think that if oxygen is needed to produce heat, maybe only a small amount of oxygen is getting through the fabric. To test this, the students design an investigation to record the change in temperature when the hand warmer ingredients are left in the hand warmer bag and when they are taken out of the hand warmer bag. The students set up two systems. Investigation Plan (1.) Open two hand warmer packages. Place one hand warmer bag on a dish labeled System 1. (2.) Cut open the other hand warmer bag and pour the materials from inside the bag onto the dish labeled System 2. (3.) Place a thermometer under the hand warmer bag in System 1 and a thermometer inside the materials in System 2. (4.) Record the temperature of both systems every five minutes until one of the systems nears the starting temperature. Select TWO similarities between System 1 and System 2.

The temperature increases in both systems.

The temperature decreases in both systems.

The temperature remains constant in both systems.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

9.

MULTIPLE SELECT QUESTION

1 min • 1 pt

After observing what happens with the iron in the hand warmers, the students decide to work on improving the hand warmers to make them get warm faster. The students observe that the hand warmer bag is made of fabric containing tiny holes. They think that if oxygen is needed to produce heat, maybe only a small amount of oxygen is getting through the fabric. To test this, the students design an investigation to record the change in temperature when the hand warmer ingredients are left in the hand warmer bag and when they are taken out of the hand warmer bag. The students set up two systems. Investigation Plan (1.) Open two hand warmer packages. Place one hand warmer bag on a dish labeled System 1. (2.) Cut open the other hand warmer bag and pour the materials from inside the bag onto the dish labeled System 2. (3.) Place a thermometer under the hand warmer bag in System 1 and a thermometer inside the materials in System 2. (4.) Record the temperature of both systems every five minutes until one of the systems nears the starting temperature. Select TWO differences between System 1 and System 2.

The temperature of System 1 increases more quickly than System 2.

The temperature of System 2 increases more quickly than System 1.

System 1 reaches a greater maximum temperature (at 80 minutes) than System 2.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

10.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The final mass of the material on the dish the next day is ___________ the initial mass of the material.

more than

less than

equal to

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

M-Step Science Practice

25 questions

Which of these is NOT a practice of science?

Which of these is NOT a practice of science?

The final mass of the material on the dish the next day is ___________ the initial mass of the material.

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