unit 1
The standard System of measurment used by scientific community.
What isthe SI System?
Smallest units ofan element or a compound that occurs most commonly in nature.
What are molecules?
Reactants & products.
What are two chemical changes?
Matter is made of small particles.
What is kinetic theory of matter?
Preassure is force applied over an area .
What is fluid preassure?
They are units produced by using two or more units in a combination.
What are Derived units ?
Joined atoms of different elements.
What are compounds?
Gas formation, Color changes, Solid formation, Energy change
What are four chemical changes?
Temperature is the average kinetic energyof a substances particles.
What is temperature?
Greater volume above an object equals a greater fluid preassure.
What is fluid volume?
They help make measured quantities more managable and applicable.
Why make Conversions?
Flammability & Reactivity
What are two chemical properties?
A chemical change occurs when the identity of a substance transforms into another substance or substances.
When do chemical changes appear?
Mass of matter cannot be created or destroyed.
What is the Law of conservation of mass ?
The volume and preassure of a gas at constant temperature have an indirect relationship.
What is Boyles Law?