Dissolving and Melting

What is melting?

• a change from liquid to solid

• a change of smell

• a change from solid to liquid

• a change of amount of solute

Tags

NGSS.MS-PS1-4

Which materials in our lab melted?

• margarine, bananas, rocks

• margarine, ice, wax

• margarine, and a chocolate chip

• the rock

What causes objects to melt?

• cold

• heat

• sound

• stirring

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Could the rock melt?

• Yes, rocks melt in the rock cycle deep in the earth

• No, rocks cannot melt

Tags

NGSS.MS-ESS2-1

Which answers are true?

• ice melts into water at 0 degrees Celsius

• chocolate melts at about 45 degrees Celsius

• a pebble will melt at 1000 degrees Celsius

• a nice day is around 0 degrees Celsius

Dissolving is an interaction between:

• the conservation of matter and time

• two (or more) substances: a solute and solvent

• solids and liquids

• temperature of a solid and the air

Melting is a change in a ____________ __________from solid to liquid.

• single substance

• single atom

• single mixture

• celsius and fahrenheit

The drought-stopper worked because

• it was magic

• there was a water bottle in the box

• there was a clever hamster in the box

• there was a clever siphon in the box

Dissolving requires heat.

• true

• false

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Butter on hot mashed potatoes is an example of:

• dissolving

• melting

• boiling

• freezing

Tags

NGSS.MS-PS1-4