Phases/States
What are the 3 states of Matter?
Solid, Liquid, Gass
What is it called when a liquid changes to a solid?
Freezing
What is it called when a solid turns in to a liquid?
Melting
The Balloon experiment and the ice cream experiment demonstrates what type of change?
Balloon experiment = Chemical Change
ice cream experiment = Physical Change
What is matter?
Matter is anything that takes up space and creates energy.
What kind of change is a paper being ripped?
A physical change.
What kind of change is a brownie batter being baked?
A chemical change.
What happened in the balloon experiment?
The balloon was filled with baking soda, the bottle was filled with vinegar. When the baking soda mix with the vinegar it created carbon dioxide gas that filled up the balloon.
What are particles?
Particles are small compounds that make up matter.
What is the difference between a physical and chemical change?
A chemical change is irreversible, while a physical change is reversible.
The _____________the temperature the faster it will evaporate.
warmer
What happened in the ice cream experiment?
The bag with cream, vanilla and sugar were placed in another bag filled with ice and salt. Then, shake them to change the liquid ingredients into solid ice cream.
What particles move the fastest, solid, liquid, or gas? Why?
Gas because the particles do not stay in one space.
What is evaporation? Give an example.
Evaporation is when a liquid turns into a gas.
How does condensation work?
Condensation occurs when water is evaporated and condenses into water droplets. The droplets from the evaporation collect on a cold surface.
What are the types of changes that took place in the 2 experiments?
Chemical Change, Evaporation, and Freezing.
What do the particles look like in a solid, liquid and gas?
In a solid they are still and in neat rows, in liquid they are further apart and loose, and in a gas they are very far apart.
What is sublimation?
Sublimation is the process of a solid turning directly into a gas.
What is an example of sublimation?
Dry ice turning into carbon dioxide. Ice crystals evaporate.
What is the purpose of the salt when making ice cream?
It lowers the freezing point of the ice cubes and therefore makes them much colder which helps tur the ingredients into ice cream.