CR Mid Unit Review

Based on our bath bomb experiments, what are signs that we are creating something that wasn't there before?

• color change in water

• gas bubbles appear

• the water became colder

• the bath bomb sinks to the bottom the whole time

Tags

NGSS.MS-PS1-2

We are studying a phenomenon of the appearing gas bubbles in the bath bomb. What does the word "phenomenon" mean?

• a mystery

• a clue

• an experiment

• an easy question

When we put different ingredients in water, we saw them dissolve. What does the word "dissolve" mean?

• break down completely in a material

• turn into a gas

• turn invisible

• turn into a liquid

We noticed that some ingredients are soluble while others are not. What does the word "soluble" mean?

• able to dissolve

• not able to dissolve

• able to be answered

• mysterious

We have made different observations on separate bath bomb ingredients. Another word for "ingredients" is...

• substances

• items

• things

• molecules

When two or more bath bomb ingredients are put together they create a...

• mixture

• combination

• reaction

• molecule

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

During experiments, our best tool to measure the weight of an object is to use a...

• scale

• test tube

• phenomenon

• mixture

During experiments, the best way to keep substances separated is to use a...

• test tube

• scale

• microscale

• soluble

Each substance has different properties that sets it apart from others. Match the substance with its properties.

• white, smooth texture, insoluble, solid

• 
• white, fine texture, soluble, solid

• 
• yellow, smooth, insoluble, liquid

• 
• yellow, rough texture, soluble, solid

• 

Tags

NGSS.MS-PS1-1

How do we tell the difference between different substances in bath bombs?

• Each substance has different properties like color, smell, texture, or if they are soluble

• It is impossible to tell substances apart

• Each substance that looks the same is the same

• All substances that dissolves in water are the same

Tags

NGSS.MS-PS1-2