Density and Solutions Concepts

A student said to her friend how sweet tea has different physical properties than a box of toys.

Which of the following statements best explains the differences?

• The sugar dissolved in the tea and the toys did not dissolve in the toybox.

• The toys are a mixture and the sweet tea is not.

• The sweet tea is translucent and the toys are not.

• The toys are a solutionn and the sweet tea is not.

Tags

NGSS.MS-PS1-2

Ms. Williams says anything over 7grams will sink. Looking at the chart, do you think this statement is this true of false?

• True
• False

Mass alone will determine if something sinks or floats.

• True
• False

Relative density (mass over volume = density) determines if something floats or sinks.

• True
• False

Based on the picture, what did the moon look like on Saturday, May 12th?

• 
• 
• 
• 

Tags

NGSS.MS-ESS1-1

A bottle contains 400 grams of water and a student adds 40 grams of salt. What will the solution now measure?

• 0g

• 400g

• 440g

• 40g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Some friends were talking about the environment and energy. Dave said that we need to use less things and _____________ the items we can like used cans, glass, plastic and paper.

• keep

• save

• conservation

• recycle

Tags

NGSS.MS-ESS3-3

Dave and friends are having a conversation about natural resources and energy. Amelia says that when you leave a room you should turn off the lights. She said this was a type of __________ of resources.

• energy

• conservation

• recycling

The friends having a conversation about natural resources and energy agree that recycling and turning off lights will ___________ the environment.

• harm

• help

Tags

NGSS.MS-ESS3-4

Why does the mass of an object alone not determine if an item sinks or floats?

• Becasue Relative density determines if something sinks or floats

• the volume and the mass of an object determines if something floats or sinks

• you can have something with a small mass sink