SC 5 P 9 1

Micah placed a beaker of water on a hot plate. When bubbles started coming to the top of the water, he made the first sketch. After 5 min, Micah made the second sketch.

What happened during the 5 min that Micah was observing the beaker of water?

• Water was changed into energy during a chemical change.

• Water was changed into a different state during a physical change.

• Water was changed into a different material during a physical change.

• Water was changed into a different material during a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Study the image. Which two changes shown are physical changes?

• chopping wood and boiling water

• cooking food and burning wood

• burning wood and boiling water

• cooking food and chopping wood

Tags

NGSS.MS-PS1-2

Changes to matter can be classified as physical changes or as chemical changes. Which of the following represents a physical change?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-2

Jacob put yeast into two bowls of water and added a little sugar to each bowl. He put one bowl in a warm place and the other bowl into the refrigerator. After a while, Jacob observed tan-colored foam spilling over the sides of the warm bowl. What kind of change is this?

• physical change

• chemical change

• scientific change

• geological change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Taylor put the same amounts of water, sugar, and yeast into three balloons. Then she put each one in a place with a different temperature and observed the changes. If someone wanted to replicate Taylor’s experiment, what other information would they need?

• the mass of each balloon and what was in it

• the temperature where each balloon was placed

• the size of the table where each balloon was placed

• the total mass of all balloons and what was in them

When an egg is cracked and put in a hot pan, it flows easily. After it cooks for a minute, the egg becomes solid. Why does the egg change?

• Breaking the shell is a physical change in the egg that makes it solid.

• Breaking the shell is a chemical change that makes the egg become solid.

• Heating the egg on the stove causes the egg to evaporate and become solid.

• Adding heat causes a chemical change in the molecules of the egg that makes it solid.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Jo observed some changes and made a table of chemical changes and physical changes.

Which change did Jo put in the wrong column?

• sharpening a pencil

• baking a loaf of bread

• pouring milk into a glass

• crumpling aluminum foil into a ball

Tags

NGSS.MS-PS1-2

When a hiking club went on an outing, they took marshmallows to roast over a campfire.

Which of these changes is a physical change?

• Wood burns and forms ash.

• Smoke forms above the fire.

• Air expands and moves away from the fire.

• Marshmallows become blackened and crispy.

Bubbles forming after two or more substances are mixed together.

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

Many physical and chemical changes are affected by temperature.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4