Changes in Matter

Jessie puts a cookie on one side of a pan balance. She puts enough cubes on the other side so that the pans are balanced. She counts 27 cubes. Jessie crushes the cookie and places ALL the crumbs back on the scale. No crumbs fall off. Which of these statements about the pan balance is true now?

• The balance will tip to the side of the plastic cubes.

• The cookie crumb parts will tip the balance to one side.

• The pans will not balance unless more cubes are added.

• The pans on the balance will be even once again.

Kelvin and Sashreek share a pie for dessert. Each of the slices has the exact same mass. What can Kelvin and Sashreek conclude about the whole pie?

• The mass of each slice will be the same as the whole pie.

• The total mass of all the slices will be the same as the whole pie.

• The mass of each slice will be greater than the whole pie.

• The total mass of all the slices will be less than the whole pie.

Tags

NGSS.5-PS1-2

Mrs. Possidonio's class is completing a lab in her science class. The students mix hydrogen peroxide and yeast to show that when combined, they create heat.

Which of the following best describes how Mrs. Possidonio's class will produce a chemical change in their lab?

• The hydrogen peroxide and yeast created steam in the bag.

• The hydrogen peroxide will eventually evaporate

• The yeast will harden as it dries out.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Jace places two pieces of steel wool in a jar for a couple of days. What can Jace predict will happen to the steel wool over the next few days?

• It will create a moisture.

• It will become hard.

• It will become shiny.

• It will turn reddish from rust

Tags

NGSS.MS-PS1-2

Leslie went to go eat an apple from her fridge. She decided not to eat it when she saw that there was some decay. Leslie knows that decaying is a chemical change which results in new substances. What does Leslie observe about the apple that displays evidence that a chemical change has happened?

• A change in size and shape

• a change in color and smell

• a change in texture and shape

• a change in size and hardness

Tags

NGSS.MS-PS1-2

The students in Mrs. Christiansens’ class conduct an experiment on the conservation of mass. The class puts all of their results in a chart. Stevie’s data is much different from everyone else’s results. Which statement best explains why this has happened?

• Stevie did not add her results to the chart correctly.

• Stevie is more careful than the other students.

• Stevie is a better scientist than the other students.

• Stevie did not do the experiment correctly.

Tags

NGSS.MS-PS1-5

During which part of an experiment would a scientist collect data?

• Share results

• drawing conclusion

• asking a question

• conducting an investigation

Tags

NGSS.MS-PS2-2

Mr. Leubscher asked his science class what would happen if a substance were to undergo a physical change. The students said that there would be a change in form. Which of the following would NOT provide evidence that supports the students' claim?

• presence of bubbles

• change in texture

• change in hardness

• change in size or shape

Which of the following is an example of an experiment?

• Taking notes on chemical and physical changes

• determining the effect light has on worms

• making a scale model of DNA

• recording the number of fish swimming in the nearby pond

Tags

NGSS.MS-LS2-1

Jada has two mechanical pencils that are exactly alike. She gets pencil A and takes out all of the lead and takes off the eraser and places each item on a digital scale. She records the mass of each piece.

If Jada were to place pencil B on the scale, what would most likely be its mass?

• 6 g

• 3 g

• 1 g

• 2 g