Changes in Matter

Stacy places a model car on one side of a pan balance. She puts enough plastic cubes on the side of the balance until the pans are even. She counts 125 plastic cubes. Stacy then takes apart the boat and places the parts back on the pan. Which of these statements about the pan balance is true NOW?

• The parts of the boat will tip the pan balance to one side.

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

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

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

Josh and Maggie have made a model of a volcano for the fourth-grade science fair. They use baking soda, vinegar, and red food dye to show how a volcano will erupt. Which of the following BEST describes how Josh and Maggie will produce a chemical change in their model?

• The vinegar will evaporate.

• The red dye will change the color of the volcano.

• The material the volcano is made out of will harden.

• The baking soda and vinegar will produce bubbles.

Tags

NGSS.MS-PS1-2

Sara and Mason share a pie for dessert. Each of the slices has the exact same mass. What can Sara and Mason conclude about 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 the same as the whole pie.

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

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

Tags

NGSS.5-PS1-2

The students in Mrs. Smith's class use different methods to conduct investigations. Which of the following is an example of an experiment?

• Recording the number of species of birds in an ecosystem

• Taking notes on where birds prefer to build nests

• Determining the effect of sunlight on the growth of roses

• Making a scaled model of the planets of the solar system

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Edgar has a fruit bowl at home. He sees a piece of fruit that is decaying. Edgar knows that decaying is a chemical change that results in new substances. What does Edgar observe about the fruit that is evidence that a chemical change has happened?

• A change in size and hardness

• A change in size and shape

• A change in texture and shape

• A change in color and smell

Tags

NGSS.MS-PS1-2

Scientists use different processes to investigate scientific questions. The methods that scientists use to investigate questions can vary. During which part of an investigation would a scientist gather evidence?

• Drawing conclusions

• Conducting an investigation

• Analyzing the results

• Asking a question

Tags

NGSS.MS-LS2-1

Logan builds a tower using Legos. If the total mass of the Legos in the tower is 200 grams, what can Logan predict will be the mass of the blocks if he takes them apart and places them all on a digital scale?

• 100 grams

• 5 grams

• 50 grams

• 200 grams

The Statue of Liberty in New York City is made of copper. At first, the statue had a shiny copper color to it. Over the years, the copper turned green. What is the BEST reason for why it changed colors?

• The copper underwent a chemical change

• The statue underwent a physical change.

• Rain washed away the copper color.

• Workers painted the statue green

Tags

NGSS.MS-PS1-2

Destiny is studying how matter changes in science class. She wants to make a poster of how a change in a material can result in new material. Which of the following would be the BEST for Destiny to show on her poster?

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Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Katie has two toy cars that are exactly alike. She takes apart the pieces of one toy car and places each piece on a digital scale. She records the mass of each piece. If Katie placed Car B on the scale, what would most likely be its mass?

• 30 grams

• 20 grams

• 42 grams

• 54 grams