Changes in Matter- physical and chemical changes

A student added sugar to a glass of lemonade and stirred until the sugar disappeared. Why is this mixture a solution?

• The sugar pieces are still visible.

• The lemonade becomes a solid.

• Its parts are evenly mixed together.

• The sugar changes into a new substance.

What claim can be made about the event happening in the model?

• It is a physical change because the water can be refrozen to make ice again.

• It is a physical change because a liquid is formed at the end of the process.

• It is a chemical change because new materials are made when melting happens.

• It is a chemical change because the particles of the ice are close together.

Tags

NGSS.MS-PS1-4

How did matter change to make the food shown in the model? 

• It went through a chemical change.

• It went through a physical change.   

• A mixture was separated over time.

• A solution was mixed together.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

NGSS.MS-PS3-4

Which of the following would be a chemical change?

• Melting a popsicle

• Tearing a sheet of aluminum foil

• Rusting of an iron nail

• Cutting a piece of string

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student placed a beaker of saltwater over a flame. The water evaporated, leaving salt behind. What is this an example of?

• A physical change

• A mixture

• A chemical change

• Condensation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

Why is trail mix considered a mixture?

• Other foods can be mixed in with the nuts.

• The nuts are very well mixed together.

• It has several parts that can be easily separated.

• Heating it will cause it to separate out.

Which of these is an example of a physical change?

• Burning wood in a campfire

• Rusting of a bicycle chain

• Frying an egg

• Breaking a glass bottle

Which of the following is a chemical change?

• Melting an ice cube

• Tearing a sheet of paper

• Chopping a carrot

• Burning a piece of wood

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which example shows evaporation happening?

• A puddle drying up in the sun

• Ice cubes melting in a glass

• Water freezing into ice

• Steam turning back into water droplets

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

A _______________ is a combination of two or more things where each thing keeps its own properties and it isn’t changed by the combination.

• Evaporation

• Solution

• Mixture

• 1. Physical Change