Temperature

Tyler has a cup with water at 80 degrees Fahrenheit, Melissa has the same size cup and water at 70 degrees Fahrenheit, and Tom has the same size cup and water at 96 degrees Fahrenheit. They all add the same amount of salt. Who's salt dissolves the fastest?

• Tyler

• Melissa

• Tom

• They all dissolved at the same rate

Tags

NGSS.MS-PS1-4

Tara wants some flavor added to her water. She opens a packet with strawberry powder to add to her water. What will make her powder dissolve faster?

• Adding ice cubes

• Adding more water

• Leaving the water on the counter

• Stirring the powder in the water

Which of these is NOT a physical change?

• Shredding paper

• Ice melting to water

• Take a torch and burning wood

• A glass breaking into pieces

Which of these is NOT a chemical change?

• Wax melting

• Rust on a car

• A cake baking in the oven

• Fireworks exploding in the air

Tags

NGSS.MS-PS1-2

Ice coming out of the freezer and melting in a drink is...

• A physical change from a liquid to a solid

• A physical change from a solid to a liquid

• A chemical change from a liquid to a solid

• A chemical change from a solid to a liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Evaporation is considered a __________.

• Physical Change from a liquid to a gas.

• Chemical Change from a gas to a liquid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of these is a sign of a chemical change?

• Change in size

• Change in shape

• Change in color

• Change in state of matter (solid, liquid, gas)

Tags

NGSS.MS-PS1-2

What are the reasons for a faster dissolving rate?

• Adding more liquid

• Using warm water

• Stirring and colder temperature

• Stirring and hotter temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When stirring in a powder with a liquid it will ​ (a)   . For example, stirring sugar into water it will become sugar water that you will be able to taste.

• dissolve
• disappear
• not change

Tags

NGSS.5-PS1-4

Which of these will most likely dissolve in water?

• Oil

• Sugar

• Rock

• Sand