Physical & Chemical Changes

Jaysen found an apple on the ground. He noticed it was squishy and had brown spots. Which claim is best supported by the evidence?

• The apple burnt like a candle, which is a chemical change.

• The apple rotted, which is a chemical change.

• The apple moved, which is a chemical change.

• The apple shrunk, which is a chemical change.

Tags

NGSS.MS-PS1-2

A physical change is a change that does not cause a new substance to form. Which is an example of a physical change?

• a candle wick burning

• a dead animal decaying

• milk spoiling

• a frame breaking

Riley got a new bike for Christmas and he wants to ride it to school and leave it outside on the bike rack during the day. His mom thinks that Florida's rainy weather, the metal on the bike, and the air will cause a change over time. What change might happen to the metal on the bike?

• The metal will melt

• The metal will burn

• The metal will rust

• The metal will twist

Tags

NGSS.MS-PS1-2

Cynthia baked a tray of brownies. When the brownies came out of the oven, Cynthia noticed that its color had changed and it smelled different from the batter. Also, the batter was wet and sticky, but now the brownies are dry and firm. Mackenzie says that a permanent change has taken place, but Cynthia says that the change is not permanent. Who is correct and why?

• Mackenzie is correct because a chemical change has taken place.

• Cynthia is correct because a chemical change has taken place.

• Mackenzie is correct because a physical change has taken place.

• Cynthia is correct because a physical change has taken place.

Tags

NGSS.MS-PS1-2

Which process results in a permanent change to matter?

• a graham cracker breaking into pieces

• a piece of firewood burning to ashes during a campfire

• a pieces of paper being folded into an airplane

• dry baking soda and pepper being mixed together

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Jelani was scrambling eggs for breakfast. Which of the following is NOT evidence that the scrambled eggs are a new material?

• You cannot change scrambled eggs back into raw eggs.

• The scrambled eggs smelled different than the raw eggs.

• The scrambled eggs were a different color than the raw eggs.

• The scrambled eggs are a different shape than the raw eggs.

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

Jahia left a banana in her backpack for two weeks. When she finally noticed it, she saw black spots on it, the banana had a strong odor, and it was squishy. What kind of change had occurred to the banana?

• The banana shrunk

• The banana had decayed

• The banana germinated

• The banana was squashed

Tags

NGSS.MS-PS1-2

A chemical change forms a new kind of matter. Which is an example of a chemical change?

• crushed soda can

• melted ice

• burnt toast

• broken crayon

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Mrs. Hill used physical and chemical changes when she made pancakes. Which statement tells how she used a chemical change?

• heating the batter on the griddle

• heating up the griddle

• pouring the batter into the bowl

• measuring the water

Tags

NGSS.MS-PS1-2

Mrs. Campbell uses physical and chemical changes during her art classes. Which statement best describes a physical change she might use?

• firing pottery in a kiln to make it shiny

• putting copper in saltwater to give it a green tarnish

• cutting up paper to make a collage

• using a vinegar solution to dissolve ceramics