S5P1a Physical Changes in Matter

Mr. Johnson’s science class is studying matter. It’s “Fun Food Friday” and he wants to find a food related activity that would demonstrate a physical change.

• boiling eggs

• baking cookies

• making waffles

• melting juice bars

Which is an example of a physical change?

• separating a mixture using a magnet

• burning wooden logs in a fireplace

• leaving out a cut apple to brown

• frying an egg in a frying pan

Mr. Stone is preparing materials for his class to investigate physical changes in matter. He collects a group of items that the students can use to demonstrate different physical changes in matter.

Which statement explains which item should be removed from Mr. Stone’s collection of tools?

• The scissors should be removed because not all matter can be cut with scissors to create a

  physical change.

• The tweezers should be removed because they

  will only pick things up and not create a physical

  change.

• The safety lighter should be removed because

  burning matter will create a chemical change.

• The hammer should be removed because

  destroying matter causes a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Byron is on a camping trip, and it is cold. He needs to build a fire to stay warm. As he is building the fire, he remembers Mr. Carter teaching about chemical and physical changes in matter.

Which of the following represents a physical change in the wood, and why?

• gathering wood, because it’s location is being

  changed

• cutting wood for the fire pit, because its shape is

  being changed

• putting wood in the pit, because it’s arrangement

  is being changed

• burning the wood, because it chemical

  composition is being changed

Leah adds a cup of uncooked rice to a cup of dried peas in a bowl.

Which of the following will NOT happen?

• The rice and peas will be able to be separated.

• The rice and peas will rest side by side in the

  bowl.

• The rice and peas will maintain their physical

  properties.

• The rice and peas will combine into a new

  chemical substance.

Jordan's dad made Jordan a salad for lunch. The picture shows Jordan's salad. Jordan does not like tomatoes, and he removed all the tomatoes from the salad before he ate it.

Which best describes what Jordan did?

• Jordan separated a mixture, which is a physical

  change.

• Jordan separated a mixture, which cannot be

  reversed.

• Jordan made a new substance, which is a

  physical change.

• Jordan made a new substance, which cannot be

  reversed.

Addison was doing an experiment with water in a closed container. She noticed that some water evaporated and condensation formed at the top of the cup. What could Addison say about the mass of the water in the cup as the experiment continued?

• The mass decreased because the water

  evaporated.

• The mass increased because more water

  appeared during condensation.

• The mass stayed the same throughout the

  experiment.

• The mass decreased because less water

  appeared at the bottom of the cup.

Tags

NGSS.MS-PS1-5