Changes in Matter

Stacy places a model boat 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 135 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 balance will tip to the side of the plastic cubes.

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

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

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

Tags

NGSS.5-PS1-2

Trent and Regan share a mini pizza for lunch. Each of the slices has the exact same mass.

What can Trent and Regan conclude about the whole pizza?

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

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

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

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

Tags

NGSS.5-PS1-2

Jonah and Melissa 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 Jonah and Melissa will produce a chemical change in their model?

• The baking soda and vinegar will produce bubbles.

• The vinegar will eventually evaporate.

• The red dye will cause the volcano to change color.

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

Tags

NGSS.MS-PS1-2

Mrs. Nichols left a watering can in her garden for several weeks. During this time, it rained often. Then, the sun came out and dried everything off. How does Mrs. Nichols know that a change has taken place in the watering can that resulted in a new substance?

• The can is wet.

• The paint is peeling.

• The water has evaporated.

• The can has reddish rust.

Tags

NGSS.MS-PS1-2

Edwin and his friends are hiking in the woods. They see a tree and some plant matter that is decaying. Edwin knows that decaying is a chemical change which results in new substances. What do Edwin and his friends observe about the tree and plant matter that is 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

Keneesha has two toy rockets that are exactly alike. She takes apart the pieces of one toy rocket and places each piece on a digital scale. She records the mass of each piece.

If Keneesha placed the entire toy of Rocket B on the scale, what would most likely be its mass?

• 10 kg

• 14 kg

• 30 kg

• 54 kg

Which example describes a situation in which a material is NOT changing into another substance?

• Rocks being broken into pieces

• Baking cookies

• Smoke from a fire

• Iron nail rusting

Skylar makes a list of chemical changes she finds around her home for a homework assignment. Her notes are shown below:

Which of the items in Skylar’s list does NOT belong?

• Leaves decaying

• Icicles melting

• Wood burning

• Rust on a bicycle

Tags

NGSS.MS-PS1-2

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

• 
• 
• 
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Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Jeremy has a 10-piece wooden puzzle. He finds that each piece has exactly the same mass and the whole puzzle has a mass of 150 grams. He takes the puzzle apart and places half the pieces on one side of an equal arm balance. How much mass does Jeremy need to add to the other side of the balance for the two pans to be even?

• 15 g

• 50 g

• 75 g

• 150 g

Tags

NGSS.5-PS1-2