Solids Liquids & Gasses, Densitity, Chemical & Physical Changes and Seperating Mixtures Flashcards
Tell me about physical changes
No new substance is formed
Easy to reverse
Tell me about chemical changes
A new substance is formed
Not easy to reverse
What is an example of a physical change
Ice melting to water, which can be reversed by freezing.
What is an example of a chemical change
An iron nail rusting to form a new substance called iron oxide.
What is the law of conservation of mass?
The law of conservation of mass states that matter cannot be created or destroyed but can change from one form to another.
What is made of matter
Everything
What are the 3 states of matter?
Solid, liquid & gas
What are 4 ways of separating mixtures
Filtration, Chromatography, Evaporation & Distillation
What’s filtration used to separate?
Filtration is used to separate a solid that does not dissolve in liquid from a liquid.
What’s Chromatography used to separate
Chromatography is used to separate mixtures of dissolved substances.
What’s Evaporation used to speperate?
Evaporation is used to separate a solid that does dissolve in liquid from a liquid.
Whats distillation used to separate?
Distillation is used to separate a solid that does dissolve in liquid from a liquid when you want to keep the liquid or to separate two miscible liquids (liquids that mix).
How do you calculate area?
LxW
How do you calculate volume?
LxWxH
